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.
Both sides then created few chances to take one point apiece following the thrilling four-goal draw.
Under CONCACAF's qualifying format, the winners of each of the six first-round groups will play a two-legged knockout tie for a place in the last phase. Mexico, the United States, Costa Rica, Jamaica and Honduras have already secured a place in the final round by virtue of their rankings.
Orient Xiamen is a 6,342-yard, par-72 layout designed by Ronald Fream and TK Pen
Hazard could be Madrid's 'signing' of the summer. The winger arrived unfit 12 months ago and struggled with injuries all season, but anyone who has seen him play for Chelsea knows what Hazard can do, and if the Belgian returns to his best he will add another dimension to Madrid's front line in terms of movement, dribbles, assists and goals.
Elsewhere, Belarus' fifth seed Aryna Sabalenka lost to compatriot Victoria Azarenka 6-1, 6-3, ninth seed Johanna Konta of Britain was stunned by Romania's Sorana Cirstea 2-6, 7-6 (5), 6-4 and tenth seed Garbine Muguruza from Spain lost to Bulgaria's Tsvetana Pironkova 7-5, 6-3.
"Catalyzing, accelerating developments shared in amongst the citizens of a given city region or country. The Games represent a formidable asset to accelerate some long term developments. This is what has been done for Beijing 2022, and we've learned a lot." Enditem
The next round of the 2020 season sees Formula 1 remain in Italy and head to Mugello for the first time, for the inaugural Tuscan Grand Prix. Enditem
After dropping his serve to trail 6-5 in the first set of his fourth round match against Spain's Pablo Carreno Busta, Djokovic angrily smashed a ball in frustration which struck the line judge in the neck, causing her to fall to the ground.
Liang Ruiji and Li Jingmin from Guangdong finished first and second respectively in the individual dressage race, and Penpa Tsering from Tibet came third.
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.