South Korea on Wednesday repatriated the remains of Chinese soldiers killed during the Korean War six decades ago, a move that reflects Seoul's commitment to the humanitarian project despite a political row between the neighboring countries over a U.S. weapon system.

The 28 sets of remains were handed over to China in a repatriation ceremony held at Incheon International Airport, just west of Seoul, according to the Ministry of National Defense. It was attended by delegations led by Hwang In-moo, South Korea's vice defense minister, and Sun Shaocheng, China's vice minister of civil affairs.

The remains belong to Chinese soldiers who died fighting against South Korea in the 1950-53 Korean War. China fought alongside North Korea, while the South was backed by U.N. forces including U.S. troops.

Seoul and Beijing struck an agreement in 2014 on the return of Chinese soldiers' remains excavated from graves in South Korea.

More than 180,000 Chinese soldiers are estimated to have died in the war.

A total of 541 remains were sent back in three batches as of last year.

There had been some doubts about the implementation of the deal, with the two sides experiencing friction over the deployment of a Terminal High Altitude Area Defense (THAAD) battery to South Korea.

China believes the U.S. is seeking to position the advanced missile defense system on the peninsula not only to help ward off North Korea's threats but also to counter Beijing's growing military influence in the region.

The allies, however, stress the need for the THAAD unit here is solely to cope with the North's possible missile attack more effectively.

"Although there is a difficulty in South Korea-China relations in the process of resolving the North Korean nuclear and missile issue, we pushed for the repatriation of the remains of Chinese soldiers this year from the humanitarian perspective," the ministry said.

It vowed to continue the program and efforts to improve bilateral ties. (Yonhap)