Lee Man must put behind them a disappointing performance against Eastern as they need to beat Tainan City of Taiwan to keep their slim hopes alive in the 2022 AFC Cup in Buriram, Thailand on Monday. After losing Friday’s opening game to Eastern 3-1 in an all-Hong Kong affair, they cannot afford to lose points again in the three-team competition. A victory over Tainan City would extend their hopes until the last game of the group on Thursday when Eastern meet the Taiwan Premier League side. If they beat Tainan and Tainan beat Eastern, all three teams will have three…