China and the Republic of Korea are important neighbors, and China hopes to work with the ROK to promote sound and steady development of bilateral ties, FM spokesman Guo Jiakun said on Wednesday.

Guo made the remarks at a regular news conference, in response to questions about the arrest of ROK President Yoon Suk-yeol, but declined to comment on the country's internal affairs.

The impeached president was arrested and questioned by authorities in relation to a criminal insurrection investigation on Wednesday, Reuters reported.

Yoon has become the first incumbent president to be arrested in the modern history of ROK.