She took part in the Women's World Chess Championship 2015, where she was knocked out in the first round by the eventual runner-up, Natalija Pogonina. In 2016, Guo won the Chinese women's championship. In the same year, she played on the gold medal-winning Chinese team at the Women's Asian Nations Cup in Abu Dhabi and at the Women's Chess Olympiad in Baku. In both events, she also won the gold medal for the best performance on the reserve board.