According to an agreement between China and South Korea, the two sides consult every year on the hand-over of remains of Chinese soldiers found in South Korea. A hand-over is usually held before the traditional Chinese Tomb-Sweeping Day in early April.
On Friday, two Chinese fighter jets escorted the plane carrying the remains after a ceremony at South Korea's Incheon Airport.
"We once fought together to protect our country. I don't know their names but I see every one of them as my family," said 81-year-old Korean War veteran Zou Jiliang who attended the burial ceremony.
Li Xiangsen, 70, hopes the remains, yet to be identified, included his father he has never seen.
"My biggest wish is that he returns home," he said.