Guo Tianyu, who had been missing for a period, has appeared again to participate in team training in Chiangrai United. In September this year, the Football Association released the first batch of banned players, and Guo Tianyu was given a lifetime ban. His last appearance representing Chiangrai United was on November 9. After mid-December, the Thai League entered its off-season, and Guo Tianyu has been absent from the matchday squad for five consecutive rounds.