The 16th envoy to Tang Dynasty China (18th, when the total number of such envoys was considered 20) included Saicho and Ryosen who was awarded the title of Sanzohoshi later in China.
また、第16次（20回説では18次）遣唐使一行には、最澄や後に中国で三蔵法師の称号を贈られる霊仙がいた。