He made the remarks in reply to reporters’ queries on China’s construction of a military helicopter base on Quang Hoa Island and its deployment of HQ-9 surface-to-air missiles on Phu Lam Island of Vietnam’s Hoang Sa Archipelago.

” Vietnam is deeply concerned over China’s aforementioned activities, which seriously violate Vietnam’s sovereignty of the archipelago and threaten peace and stability in the region, as well as navigation and aviation security, safety and freedom in the East Sea,” he said. ” Vietnam demands China immediately end these wrongdoings.”

The same day the Ministry of Foreign Affairs sent a diplomatic note to the Chinese Embassy in Hanoi to protest against China’s infringements on Vietnam’s sovereignty on Hoang Sa Archipelago.

Vietnam’s permanent mission to the UN also sent a diplomatic note to the UN Secretary-General proposing the official circulation of the Vietnamese foreign ministry’s diplomatic note.