David Feng is now married with Tracy Liu.

David Feng (馮琰), male, Swiss-Chinese, born in Beijing in 1982. Presently a PhD student in communications at the Communication University of China, and an English teacher with TEFL certification. Author of the Chinese language book Jiong Chinglish about the Chinglish phenomenon. Regular guest on train travel in China on Radio Beijing in mandarin Chinese. Avid train traveller: 12,284 km of total train mileage this year.

Tracy Liu, female, PRC citizen, born in Heilongjiang in 1983. Presently an English teacher with double bachelor degrees in English and in media studies. Co-author in an upcoming book about Chinese TV. Joined David Feng as one of the very first riders on the Beijing-Shanghai HSR; featured in national press. Enthusiastic train traveller: 7,233 km of total train mileage this year.