Stoppila Sunzu pulled one back for Shijiazhuang shortly after the interval. But Mierzejewski restored Chongqing's two-goal advantage in the 72nd minute and completed his hat-trick with a penalty to seal a 4-1 win.
Yuan looked as if she thought the game was over after the second set, but it was in the third set where Yunnan staged their strongest resistance.
Cadiz entertain Sevilla in another rescheduled game that has taken 24 hours off Sevilla's recovery time from the European Supercup final in Budapest. Valladolid face Celta, who will hope that striker Iago Aspas continues the form he showed as they beat Valencia a week ago. Enditem
Crystal Palace took the lead in the seventh minute through Andros Townsend and doubled their advantage through Zaha's retaken spot kick after David de Gea was judged to have moved too soon when denying Andrew Ayew after a handball.
Tokyo 2020 President Mori Yoshiro added: "We will continue to work hard on simplifications towards next year and ask for the continued cooperation of all those involved in the Games." Enditem
Seventh-placed Marseille needed a late header from substitute Valere Germain to clinch a 1-1 home draw with Lille in the latest match of the day. Brazilian forward Luiz Araujo helped Lille take the lead at the start of the second half and could have doubled it when his effort hit the cross bar in the 65th minute.
Having lost cornerstones such as Thiago Alcantara (Liverpool), Ivan Perisic (Inter), Javi Martinez (Bilbao), and Philippe Coutinho (Everton), Flick intends to update its midfield options.
The Guangzhou side leads the table with 31 points with the win, while Henan Jianye languish at second from the bottom with six points. Enditem
The first half saw fierce confrontation from both sides, as Hebei was eager to win a ticket to the championship game, while Tianjin had good morale from the latest match, and didn't want to lag behind.
Mainz were unable to put up resistance but were lucky enough that Forsberg rattled only the woodwork in the 31st minute and Angelino hit the side netting from tight angle before the half time.
The first round will be completed on October 8 when Colombia confront Venezuela in Barranquilla and Brazil encounter Bolivia in Sao Paulo.