Nguyen Tuan Anh and Bui Hoang Viet Anh scored for the host at the 16th and 75th minutes, reported state-run news agency VNA.
Accordingly, the former player sent a free kick to the high far corner of the Chinese team’s goalkeeper while the latter made it 2-0 from a penalty shootout after he missed one opportunity in the first half.
The result pushed Vietnam to the top of the table in the five-team tournament.
Vietnamese Hoàng Anh Gia Lai FC and South Korean Gwangju shared the second position after their goalless match that was played before the opening ceremony on Tuesday.
Chinese Taipei will play Gwangju, and Vietnam will meet Myanmar on Wednesday.