The five youths had gone missing on Friday from the Sino-Indian border in the Upper Subansiri district of Arunachal Pradesh.
Singh visited Tawang on Thursday for the 'Maitree Diwas' celebrations to boost civil-military friendship in the region bordering China.
Lu said China will take 'further action' to safeguard its sovereignty.
China's deteriorating economy is a serious concern. Xi Jinping and China's new premier will have a difficult task ahead of them after the 20th party congress, notes Jayadeva Ranade, the retired senior RA&W officer and China expert.
India says the State of Arunachal Pradesh is its integral and inalienable part.
A Pakistan-based hardline group is suspected to have been involved in doctoring images and spreading them across social networking sites like Facebook, Twitter and You Tube to incite Muslims and create scare among people of northeastern region living across India.
Visiting the Rezang La Memorial, one has a feeling of super-humans defending the Indian territory against the Chinese onslaught, says Claude Arpi on the 60th anniversary of the heroic battle of the 1962 War.
"The Indian government hopes to closely watch, observe, and infiltrate the Tibetan area after the opening of a Lhasa consulate," Zhao Gancheng, director of South Asia Studies at the Shanghai Institute for International Studies told state-run Global Times.
This is a major policy shift. Since 1959, when the Dalai Lama escaped to political asylum in India, the Communist Party has insisted that the Tibetans are a happy lot. The communist apparatchiks have passed off growing public protests, like the 40 self-immolations by Tibetans in the last four years, as the work of a few malcontents, instigated from "foreign countries" by the "Dalai Clique".
'Chinese soldiers don't have much experience of fighting in these kinds of areas and operating in this kind of terrain'
'The biggest problem that faces the Opposition in Gujarat is just a day or two before voting is scheduled, Modiji goes on a spree of emotional appeals.' 'That process has been set in motion much earlier this time in Gujarat.'
Districts along the Siang river in Arunachal Pradesh have been put on high alert for possible flash floods.
Russia has already begun delivery of the first S-400 systems, and the question of sanctions, or of a waiver to sanctions, preoccupies New Delhi.
The sources said the exercise was a routine military drill by China.
'China is monitoring films like ours and making sure it doesn't get a platform.'
'Why did your generals try to grab a few square kilometres of Indian territory in Ladakh?' 'And what happened to the hard work that you and Prime Minister Modi put into the Wuhan and Mamallapuram meets?' Claude Arpi writes a letter to Xi Jinping, China's self-styled supreme leader, who turns 68 today, June 15.
China has reportedly executed four Tibetan protesters, including one woman, in connection with last year's deadly riots in Lhasa. The first ever-reported judicial killings of Tibetans in China have prompted overseas protests that proper legal procedures were not followed. Although the Chinese media is yet to confirm the executions, Dharamsala-based Tibetan Centre for Human Rights and Democracy has claimed that the executions took place early on Tuesday morning.
All that India must aim for is to match China's military prowess adjusted to equal Beijing's India-specific military capability, argues Vivek Gumaste.
'Delhi was not concerned.' 'It would continue sleeping for several more years, with the result that Indian territory is still occupied by China today,' says Claude Arpi.
'Our boys are very patriotic.' 'They say Bharat Mata Ki Jai and Jai Hind in front of the Chinese.' 'We have never accepted their claims, we are Indians and proud to be Indians.'
The envoy's "Tawang visit highlights resolute US support for Indian sovereignty and commitment to local partnerships", Alice G Wells, Acting Assistant Secretary of State in the Bureau of South and Central Asia, said in a tweet on Wednesday.
'The Dalai Lama is in a tearing hurry.' 'The 'reincarnation' card remains unplayed, and time is running out.' 'Is something big being planned for the event of Tibetan Buddhist leaders in Leh in November?' asks Ambassador M K Bhadrakumar.
This was not the first time "Wiki" - a widely used, free resource - was appealing for funds. Finally, reports indicated that Google had agreed to pay for Wikipedia content.
'George Fernandes was an innocent among the cut-throats and pickpockets who infest the political jungle.' 'He was too good a man to achieve spectacular success in the game of thrones,' notes Sunanda K Datta Ray.
The government on Wednesday said any attempt by China to set up a hydropower station on the Brahmaputra river will act as an encroachment on the entitled rights of lower riparian states like India and Bangladesh and adversely affect the availability of water in its basin during the lean season.
Harvard scholar Lobsang Sangay was on Monday sworn in as the new prime minister of the Tibetan government-in-exile, succeeding the Dalai Lama as the movement's political leader.
'China wants to change the status quo of India's Northern Border and proves that it can do whatever it wants in what it perceives as its own territory,' states Claude Arpi.
The logical next step for a nation promoting democracy in North Africa or the Middle East would have been to invite the 'elected' leader of the Tibetan diaspora along with the Dalai Lama. But no, Washington prefers to receive the Dalai Lama and ignore Dr Lobsang Sangay, the new 'elected' Kalon Tripa. It is more convenient to receive a 'religious' leader, says Claude Arpi
Important for Chinese President Xi Jinping will be Zhao's discussions on the issues of Tibet and the Dalai Lama and his assessment of the likely results of India's coming national elections, notes former senior RA&W officer and China expert Jayadeva Ranade.
'India has to prepare for future warfare where kinetic use of force at the border will be limited. War will take place in the realms beyond the border.'
Senior government sources told ANI that one such camp is coming up few kilometres inside the Chinese territory opposite the Naku La area in north Sikkim area, which is barely a few minutes distance from the area where Indian and Chinese troops had clashed last year when the confrontation started and also in January this year.
The move was aimed at 'reaffirming China's claim over the state'. China claims the state as 'South Tibet'.
'All PoWs recounted that one of the worst aspects of their captivity in Tibet was the constant attempt at brainwashing by Chinese Communist propaganda,' reveals Claude Arpi.
'A firm national resolve can only deter and defeat the nefarious designs of the adversary,' notes Rup Narayan Das.
Days after a Pentagon report said Beijing built a large village in a disputed territory in the Arunachal Pradesh sector, India on Thursday said it has neither accepted any illegal occupation of its territory by China nor has it accepted unjustified Chinese claims.
Both countries have reached a mutual agreement for disengagement of troops from the most contentious area of North and South Pangong Lake.
'Today, our vast green pastures where local herders used to take their cattle to graze have been taken over by the Chinese.' 'The people in the Galwan Valley have lost their lands where their cattle used to graze.'
The next round of talks between envoys of Tibetan spiritual leader Dalai Lama and China, scheduled for June 11, might be postponed because of Beijing's preoccupation with relief efforts for earthquake victims, an aide to the Lama said on Wednesday."China has expressed difficulties in holding talks on June 11 because of the massive earthquake in that country," Tenzing Takhla, secretary to the Dalai Lama, told PTI.
Along with Union Sports Minister Kiren Rijiju, Pema Khandu undertook a 107-km all-terrain vehicle ride from PTSO Lake to Mago village in Tawang district along the Indo-China border.
'Would not accept the arguments of foreign countries and leaders to meet the Lama as a religious leader'