The visitors pressed frenetically for a goal and were rewarded in the 23rd minute when Dodi Lukebakio nodded home a corner kick from close range to halve the deficit.
"But we are still training in a systematic and focused way. And it appeared a good chance for us to get down to our own weaknesses," said Zhu.
The opening game in Ipurua is followed by the delayed match in Granada, which is a repeat of the last game of last season. That match saw Granada beat an Athletic side with nothing to play for 4-0 in order to qualify for Europe for the first time in the club's history.
Evergrande doubled the lead in the 69th minute with a stunning free kick from Ai, two minutes after his tap-in was ruled out due to off-side.
"It's already dangerous enough, and I was really surprised and shocked at the moment that I felt something," the Belgian rider added.
"Extremely happy. Tough year for everyone. Really glad the work that everyone put into this event to give us the opportunity to get back on the court," he added. Enditem
Most Chinese internationals are expected to participate in the tournament with all the games to be played behind closed doors.
"I know that all the athletes and entire athletics community were looking forward to this event but I ask them to keep heart," he noted.
Zall tried to add fresh attacking impetus by bringing loanee Dong Xuesheng and under-23 goalkeeper Wang Zhifeng on for the second half.
"In the end all I focus on is what I can control on the tennis court. That's what I did in 2018 final. I feel like that's what I did this time," said the 22-year-old Osaka, who defeated Serena Williams of the United States to win the 2018 title.
Williams had to come back from a set and a break down to storm to a 4-6, 6-3, 6-2 win against Bulgaria's Tsvetana Pironkova while Azarenka dropped just one game against 16th seed Elise Mertens of Belgium to seal a spot in the semifinals.