National teammate Zhang Yaoguang finished second at 8.23m, followed by Asian Games champion Wang Jianan at 8.08m.
Germany took the reins and pressed forward whereas Spain looked shocked and unable to respond.
World champion Daniel Stahl took his 13th consecutive victory in the men's discus, with the Swede throwing 67.28m.
"The sport venues are almost completely finished. All the constructions are on time. The financing for these Games, and especially the private contributions from the Chinese business players, has been unprecedented," he said.
Although they face a tight schedule with another seven internationals until mid-November, Loew is adjusting his traditional approach to his new generation.
Another interesting returnee is Martin Odegaard, who is back at the club after an excellent loan spell with Real Sociedad, and it will be interesting to see if the youngster finally gets the chance to impress in an attacking midfield role where there is much competition.
"You can feel it in your body when you have a good throw, mostly you feel the whole energy behind it, from the right toe to the chest to the hands. In the javelin you need your whole body. But it's really hard to explain - you feel it for less than one second. But then you realize that it was a huge throw," he explained.
The other match on Friday saw Shenzhen Jiazhaoye held Shanghai Shenhua to a 0-0 draw.
Despite a rare disappointing day, Hamilton still convincingly leads the drivers' championship with 164 points. Second-placed Bottas closes the gap slightly with 117 points, while Verstappen remains on 110 points and drops to third.
"The final climb wasn't too hard, it was difficult to make a gap there, and therefore attacking would have been a huge effort for a small gain. So we rode steady to save energy for the coming days," Yates said.
In the women's singles, fourth seed Naomi Osaka of Japan finished a routine job as she eased past Anett Kontaveit from Estonia 6-3, 6-4 to reach the quarterfinals.