When he returned to his motherland in 1945, he held a modern art exhibition in Chungking in Szechwan province with other leading artists, and became known as the best representative of avant-garde art at that time.
從民國二十三年開始，一連四年，他的作品被陳列在二科畫會的「第九室」中。第九室，在戰後日本的藝術界就等於是前衛藝術的代名詞。民國三十四年回國後，李仲生與林風眠、趙旡極、丁衍庸、關良等參加了「重慶現代繪畫聯展」，他且在當時被大家視為最前衛的一位。