Buddhist monk: Facts

the Japanese Buddhist monk Nichiji attempted to walk to Xanadu?
Empress Dowager Wu of Tang China was so fond of Feng Xiaobao, she had him undertake tonsure to become a Buddhist monk in order to facilitate his entering and exiting her palace?
Tang Dynasty chancellor Du Hongjian, immediately prior to his death, undertook tonsure and formally became a Buddhist monk?
Chinese Buddhist monk Song Yun and companions traveled to northwest India at the request of Empress Hu during the Northern Wei dynasty?

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