(190123) -- PHNOM PENH, Jan. 23, 2019 (Xinhua) -- Cambodian Deputy Prime Minister Yim Chhay Ly (2nd R), Ling Li (2nd L), deputy director general of the external promotion bureau of China's State Council Information Office, and other guests attend a inauguration ceremony of a documentary film titled The History Timeline of China-Cambodia Friendship in Phnom Penh, Cambodia, Jan. 23, 2019. A documentary film titled The History Timeline of China-Cambodia Friendship premiered here on Wednesday, aiming at further deepening cultural and people-to-people ties between the two countries, officials said. (Xinhua/Sovannara)