Wu Haoyu uses a 3D printing machine to print a lacquer ware mold in Qingdao, East China's Shandong province, on June 23, 2019. [Photo/VCG]

Wu Haoyu shows artworks reflecting Chinese lacquer culture to his classmates in Qingdao, East China's Shandong province, on June 23, 2019. [Photo/VCG]

Wu Haoyu looks at a half-finished lacquer gourd in Qingdao, East China's Shandong province, on June 23, 2019. [Photo/VCG]