The time to impose the social insurance payment is at the same time when the Sino-German agreement and the Sino-Korean agreement come into force.
征收在华就业的德籍、韩籍人员社会保险费的时间分别从《中德协定》和《中韩协议》生效之日起开始。
2
Sino-Korean words had been used extensively and played an irreplaceable role in Korean even after the King Sejeong created the Korean script at the mid-15th century.
In the 21st century, the study of modern Chinese literature tends to be more active, but deviated from the fixed road of China study. Comparatively, Sino-Korean Comparative literature develops fast.