Her working responsibility is to anonymously experience hotels' service, environment, cleanliness, value for money and dining.
Her reviews posted on the mobile app provide an independent third-party evaluation and help travelers make smart hotel picks.
"When making comments on hotels, we try our best to get rid of subjective preference and write objective descriptions... Using pictures and videos, my report serves as a vivid illustration for customers," she says.
Zhang was selected for the job in 2010 from a pool of 7,000 applicants thanks to her art college degree and background of freelance writing.
