Farias will be without key names from Bolivar and Jorge Wilstermann after officials from both clubs asked that their players be released from national duty to concentrate on the Copa Libertadores, South America's top club competition.
With Sichuan's offense bogged down, Dongguan retook the lead and delivered the final blow with efficient offensive late in the fourth to make it 78-71.
Koeman had made no secret that he wanted the duo and the failure to sign Garcia leaves Barca looking especially lightweight in central defense, where they only have Gerard Pique and Clement Lenglet, with Ronald Araujo to provide cover.
"As a young team, playing against such a strong team as Xinjiang, we can learn and improve a lot," Li said after the match.
Elsewhere, Santos rallied late to secure a 3-2 win at Goais. Marcos Leonardo, Jefferson and Marinho were on target for the visitor while Vinicius Lopes and Victor Andrade scored for Goias.
Shanghai's hope of leveling the game was shattered as Barbra Banda's shot in the 87th minute hit the woodwork and bounced off.
It is the second time for Ziyuan County to hold such an international race, the route of which covers several 4A-level scenic spots.
The AFA said Udinese goalkeeper Juan Musso had also been cut from the squad because of a knee injury suffered while training on Monday.
Once again Getafe is off to an excellent start to the season and although its style of football is not always attractive to watch, it is effective as it showed against Betis in midweek.
Next up for Halep is another 19-year-old youngster, Iga Swiatek of Poland, whom Halep defeated in the round of 16 here last year.
The Paris Saint-Germain forward has 61 goals in 101 appearances for the Selecao, just one behind Ronaldo and 16 shy of record holder Pele.