In July 671, Shiragi started the preliminary research to build diplomatic relations with Japan, the Tang envoy Rishushin and the Kudara envoy returned to their countries in August, and the Shiragi envoy, Komumanmotsu restarted his research in November, leaving Japan on January 24, 672.
天智天皇10年（671年）6月には新羅が調を進め、7月には唐の使者李守真と百済の使者が帰国し、10月には新羅の使者金万物が再び調を進め、12月17日に帰った。