Wang’s pen drawing of old views of Lanxi, an ancient city in eastern China’s Zhejiang Province.

Wang Enkuang, a 70-year-old man in the ancient city of Lanxi, eastern China’s Zhejiang Province, recently went viral online for his pen drawings of his hometown, China News reported on Dec. 24.

Wang, who loves to draw, decided to record old views of his hometown, as the local government announced a reconstruction project to improve people’ living conditions in May of this year.

Wang spent nearly three months depicting the landscapes, among which the view of Taohuawu took him the most time: 34 hours.

Although it was both time and energy consuming, Wang said it has all been worthwhile and he will continue with his drawing to leave memories of this ancient city.