When chieftains of various Wo tribes contacted authorities at Lelang, a Chinese commandery established in northern Korea in 108 B.C. by the Western Han court, they sought to benefit themselves by initiating contact. In A.D. 57, the first Wo ambassador arrived at the capital of the Eastern Han court (25-220); the second came in 107.

Wo diplomats, however, never called on China on a regular basis. A chronology of Japan-China relations from the first to the ninth centuries reveals this irregularity in the visits of Japanese ambassadors to China. There were periods of frequent contacts as well as of lengthy intervals between contacts. This irregularity clearly indicated that, in its diplomacy with China, Japan set its own agenda and acted on self-interest to satisfy its own needs.

No Wo ambassador, for example, came to China during the second century. This interval continued well past the third century. Then within merely nine years, the female Wo ruler Himiko sent four ambassadors to the Wei court (220-265) in 238, 243, 245, and 247 respectively. After the death of Himiko, diplomatic contacts with China slowed. Iyo, the female successor to Himiko, contacted the Wei court only once. The fourth century was another quiet period in China-Wo relations except for the Wo delegation dispatched to the Western Jin court (265-316) in 306. With the arrival of a Wo ambassador at the Eastern Jin court (317-420) in 413, a new age of frequent diplomatic contacts with China began. Over the next sixty years, ten Wo ambassadors called on the Southern Song court (420-479), and a Wo delegation also visited the Southern Qi court (479-502) in 479. The sixth century, however, saw only one Wo ambassador pay respect to the Southern Liang court (502-557) in 502. When these ambassadors arrived in China, they acquired official titles, bronze mirrors, and military banners, which their masters could use to bolster their claims to political supremacy, to build a military system, and to exert influence on southern Korea. (Wang 2005:221-222)