The article highlights the problem related to the early period of the history of RussianChinese relations: could the first Russian expedition to China take place in 1261? Chinese scholar and official of the 13th century Wang Yun mentioned the arrival of travelers from the country of Fa-lan in the beginning of the reign of Kublai Khan. The history of the appearance and study of this text is considered. The basic version, from where could come this mission, is defined. The arguments that indirectly testify in favor of the Russian version of the origin of this expedition are given.