YF Drawings began in various forms of quick line sketches contemplating events of the day since June 2015. This is the twenty-first volume of collections, namely SQUARE THOUGHTs (小生方洞), dated from January 6, 2023 till March 23, 2023。

「小生方洞」是風籽自2015年6月開始的日記式草圖，每次10分至15分鐘的繪圖冥想，整理片碎。這是第二十一集 （06.01.2023 – 23.03.2023）。