1 / 4   A series of pencil sketches by a 70-year-old artist, Wang Enkuang recently went viral on the social media, featuring an old town called Lanxi in east China's Zhejiang Province. /QQ News Photo

2 / 4   Wang’s enthusiasm for drawings rooted in his childhood. After years of practice and learning from artists he “met” online, Wang has adopted a unique style. /QQ News Photo

3 / 4   He thought in May to recreate Lanxi's old days, after a city renewal project launched in the old town, spending months to bring back memories of the water town. /QQ News Photo

4 / 4   It takes Wang 34 hours to create Lanxi's full view. He completed the series in 150 hours. He, however, said he would continue to draw to record the city's past. /QQ News Photo