Elsewhere, Poland, who were playing without leading striker Robert Lewandowski, registered their first victory of the tournament in Zenica.
After the game, Beijing sits the second in Suzhou division, with Shanghai SIPG dominating the bellwether position. Wuhan ranks third, trailing Beijing by two points.
As the match progressed, Joachim Low's men retreated with their narrow lead and kept all their men behind the ball.
Chelsea director Marina Granovskaia described Havertz as "one of the best players of his age in world football".
"I cannot begin to explain how incredible an opportunity it is to join a club with such an amazing history. I would like to thank everyone at Ajax, I grew up there and I will always have a special bond with the club. I am now ready to take the next step in my career and perform at the highest level and there is no higher standard than Manchester United," said Van de Beek on the Manchester United website.
Ruichang remains at second in the overall standings despite the win, while four-time CBSL champion Qingdao still leads the table.
"With brighter color and more dynamic shapes, the new emblem now looks more vigorous," said Lin Cunzhen, designer of the Beijing 2022 emblems.
In another friendly match, Senegal will face Mauritania at Lat-Dior Stadium of Thies, 70 km east of Dakar.
Felix Bastians should have snapped Teda's winless run in the 85th minute but the German saw his penalty saved by goalkeeper Deng Xiaofei.
Cruz's first match in charge will be an away clash against last-placed Atletico San Luis on Tuesday. Enditem
Meanwhile United coach Ole Gunnar Solskjaer commented that he was pleased with what the talented playmaker could bring to his team.