The hosts almost made it four moments later but Matthias Ginter hacked Felix Passlack's shot off the goal line.
Zinedine Zidane's side didn't play in the first round of matches one week ago, after their game at home to Getafe was postponed in order to allow them more time to recover after their participation in last season's Champions League in August.
Shenhua took the upper hand after Yang Xu converted a penalty on 47 minutes from Lu Lin's trip on Peng Xinli but R&F leveled in the 79th minute as Zhang Gong flicked in a cross from Chen Zhizhao.
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There is a duel between newly promoted sides as Huesca take on Cadiz, who need to recover from their opening day defeat, before Betis' rescheduled game at home against Valladolid.
Angelo Preciado, Gabriel Torres, Jairo Sanchez, and Beder Caicedo piled further misery on their opponents with second-half goals.
With just four minutes to go, Al-Ahli found a breakthrough as former Chelsea winger Marin drove into the heart of the Al-Shorta defense, and after a quick one-two with Abdulrahman Ghareeb, the German kept his composure to slot home from six yards.
Celeste head coach Oscar Tabarez named six uncapped players in the squad: Ronald Araujo, Mauro Arambarri, Nicolas De La Cruz, Diego Rossi, Damian Suarez and Rodrigo Munoz.
Apart from Werder Bremen's Florian Kohfeldt, all the other head coaches voted for Bayern Munich, the reigning champions, to win its 9th consecutive title. Is the Bundesliga really that predictable?
Events in indoor and outdoor arena will be separate.
Kike Gonzalez put Eibar ahead in the 50th minute, but two goals in an eight-minute spell on 62 and 70 minutes from Gerard Moreno and Paco Alcacer gave Unai Emery his first triumph at the club and also highlighted the attacking talent at his disposal.
In the game played against Shenhua, Dalian forward Jose Rondon blasted a curling shot past outstretched Zeng Cheng into the net in the 33rd minute.