Chinese diplomats who worked at the now closed Consulate General in Houston landed in Beijing around 19:30 on Monday.
The Chinese Embassy in the U.S. earlier said the diplomats were leaving the U.S. following the closure of the Consulate General.
"It's disappointing to see our colleagues of the Houston consulate leave the U.S. We'll always remember their contribution to bridging differences and strengthening #ChinaUS ties. We'll carry forward the friendship they've built with so many amazing American friends. Safe Journey!" the embassy wrote in a Twitter post on early Monday.
The Chinese consulate was closed last month after an abrupt demand by the U.S. on July 21.
China later ordered the U.S. to shut its consulate in Chengdu amid the diplomatic row.
