For Handan, Hebei province, for example, he depicted an ancient story from the Warring States Period (475-221 BC). He drew the Twenty-Four Bridge over Slender West Lake for Yangzhou, Jiangsu province; pandas for Chengdu, Sichuan province; murals of Mogao Grottoes for Dunhuang, Gansu province; and the Temple of Heaven for Beijing.

"The biggest challenge is myself," said Pu, adding that during the time-consuming process, he had to overcome loneliness and inner-conflicts. "But I do feel happy that my works are acknowledged by many fans online."

Traditional Chinese city cultures are always worth passing on, he said.