2021 Vietnam Championship Series Winter

The 2021 Vietnam Championship Series Summer Season is a mix of both online and LAN tournaments organized by Riot Games and Vietnam Esports. And it is the second split of the fourth season of Vietnam's fully professional League of Legends league as an independent region. Eight Summer Season teams will compete in a round-robin group stage, with the top four teams continuing to the playoffs.

The prize pool will be added as soon as it is available.

Eight teams will participate, six teams from 2021 VCS and the two teams from the Summer Promotion will be playing on a double-round robin bracket. all matches will be on best-of-three matches. The teams are ranked by match wins followed by game differential. For the advancement, the top six teams will be advance to the playoffs. The bottom two teams drop to the VCS 2022 Spring Promotion. Each team can register up to ten players for their line-up at the same time.