'Abdu'l-Bahá's exhortation on China was published in the Star of the West on the 28th of April, 1917. "China, China, China, China-ward the Cause of Baha'o'llah must march! Where is that holy, sanctified Bahai to become the teacher of China! China has most great capability. The Chinese people are most simple-hearted and truth-seeking." and "China is the country of the future."
[SotW_Vol-01 (Mar 1910)-Vol-10 (Mar 1919) p2127/2922]
See as well PG99-100 for His Tablet to Chen Ting Mo.
Chen Ting Mo accepted the Faith in the United States. He returned to Shanghai with many Bahá'í books that he deposited in the Shanghai library.
[PH31; Video Early history of the Bahá'í Faith in China 7 min 04 sec]