This is Buddha's parietal bone relic that was sent to Hong Kong from Nanjing, China to be worshipped by the public. The following is an account from Xinhuanet of the event.
"HONG KONG, April 25 (Xinhua) -- The only existing Sakyamuni Buddha's parietal-bone relic has been enshrined in the Hong Kong Coliseum Wednesday afternoon shortly after it arrived from Nanjing, capital of east China's Jiangsu Province.
President of the Hong Kong Buddhist Association Kok Kwong, President of the Buddhist Association of China Chuan Yin, Director of the State Administration for Religious Affairs Wang Zuo'an, Secretary for Home Affairs of Hong Kong Tsang Tak-sing, as well as other eminent monks and leaders attend the grand ceremony.
The 11th Panchen Lama, Bainqen Erdini Qoigyijabu was also present. This is the first time that the 11th Panchen Lama made a public appearance outside the Chinese mainland.
The 22-year-old Panchen Lama, one of the two most senior living Buddhas in Tibetan Buddhism, is also vice president of the Buddhist Association of China.
Delivering an opening remark at the ceremony, venerable KoK Kwong said the Buddha's parietal-bone relic is one of the most precious Buddhist gems, the like of which has never been seen in the world. The veneration of the sacred relic is a grand event for Hong Kong Buddhists and a blessing to the local people.
Besides Kok Kwong, Chuan Yin, Tsang Tek-sing and Wang Zuo'an also gave speeches at the ceremony. After the speeches, several Buddhist rituals were held.
The parietal-bone relic is to open for public worship for six consecutive days from April 25 to 30. Tens of thousands of Buddhist devotees will pay homage to the sacred relic. Local Buddhist followers and, indeed, all citizens are privileged to have this rare opportunity to see such sacred and precious relic.
Following the unearthing of Buddha's parietal-bone relic in June 2010 in Nanjing, this is the first time the sacred relic was moved out from the Chinese mainland. After public obeisance in Hong Kong, it is to be conveyed to the Macao region.
It is estimated that out of Hong Kong's 7 million population, 1 million people believe in Buddhism. "The Grand Blessing Ceremony for Worshipping Buddha's Parietal-Bone Relic" is the largest scale of its kind and the most spectacular Buddhist ritual ceremony ever held in Hong Kong.
The parietal bone of Sakyamuni was allegedly remained after the Buddha's nirvana. It had been unearthed in 2008 when archaeologists discovered unexpectedly a crypt in the ruins of the Changgan Temple which was built in Song Dynasty during the excavation works at the Nanjing Grand Bao'en Temple.
Buddha's relics are usually well hidden in ancient temples and away from public. Buddha's remains are highly venerated by Buddhist devotees, regarded as national treasure in many historically Buddhist countries and regions.
Sakyamuni Buddha relics have been venerated twice in Hong Kong: Buddha's tooth relic in 1999 and Buddha's finger relic in 2004 respectively."
This is a video of the grand event. Felt like they were inviting Buddha himself.