The win meant Qingdao continue to lead the overall standings, although second-placed Ruichang Biyuan also cruised to a victory, beating second from the bottom team Anhui Souyu 4-1 later in the day.
Despite the Bavarians having dominated the national and international stage, close competition is secured as domestic competitors such as RB Leipzig, Borussia Monchengladbach, Bayer Leverkusen and Borussia Dortmund have caught up over recent years.
In the 65th minute, Dalian's Ke Zhao added a goal of his own and sealed the 4-0 victory.
"It is of course very painful if you concede a goal in the last seconds of the match but I have to say that my team gave everything. Both sides played an interesting first half with chances at both ends of the green. I am overall satisfied with the performance," said Germany head coach Joachim Low.
Luis Enrique's team left it late and flabbergasted the hosts when Moreno flicked on a cross before Gaya poked home with a turn shot from very close range in the closing seconds of injury-time.
PP Sports, owned by Chinese retail giant Suning Group, had signed a three-year deal with Premier League in 2016. The broadcaster has reportedly withheld a payment of 160 million pounds rights fees which were due to happen in March.
Valter, 22, broke free during the final few kilometers and the peloton was unable to catch him.
In the 48th minute, the Venezuelan striker assisted Swedish winger Sam Larsson to stretch the lead for Dalian.
The hosts added their third goal when Daniel Sampaio latched onto Marco Antonio's pass to slot home in stoppage time.
Garcia looked untouchable in the first set and for much of the second, blasting 30 winners and breaking Pliskova's serve three times en route to a 6-1, 7-6 (2) victory.
Qingdao stormed to a 4-0 lead after they took victories in mixed doubles, men's singles, women's doubles and women's singles. However, men's doubles young pair Guo Ruohan and Shang Yichen defended some honor for Xiamen as they overcame a one game deficit to beat world champion Liu Yuchen and his partner Guo Junhao 9-11, 11-8, 11-9, 11-9 in the final dual.