张静怡
珠算
「珠算」用算盘珠子组装成“珠算”这两个字
旨在宣传国家非物质文化遗产，珠算是中国的第五大发明
The abacus characters "Suan Pan" are arranged using abacus beads to promote the national intangible cultural heritage. Abacus is China's fifth great invention.