The taxpayer of personal income tax refers to the individual who has a residence in China or has no residence and has lived in China for one year and has obtained income from inside and outside China. Individuals who receive income from China within one year. Based on the above definitions, which of the following is taxpayers who do not belong to China's personal income tax? ['Henry is American. Applying to teach at Beijing Wall Street English School for 6 months.', 'Tom is British. Applying to teach at Beijing Wall Street English School for 2 years.', 'Gao Hong is a Chinese American. Within two months of returning home to visit relatives, the company she worked in in the U. S. still paid her wages.', 'Li Yang is a professor at Peking University. She published a book in Singapore and received a fee.']