 From 1671-72, he was preaching in Gansu (which then included parts of modern Qinghai province), where his father Muhammad Yusuf had preached before.On that tour, he visited Xining (today's Qinghai province), Lintao, and Hezhou (now Linxia), and was said to convert some Hui and many Salars there to Naqshbandi Sufism.According to the Chinese (Hui) followers of the Qadiriyya Sufi school, when Afāq Khoja was in Xining in 1672, he gave his blessing to 16-year-old Qi Jingyi (later also known as Hilal al-Din, or Qi Daozu (1656–1719)), who was then to introduce Qadiriyya into China proper.