National Emblem and National Flag of the Republic of China Act Article 20
Unless otherwise provided by law, no symbol shall be placed on the national emblem or flag.
中文原文 中華民國國徽國旗法第20條
國徽、國旗除法律另有規定外，不得綴置各種符號。
English translation for reference only; the Chinese text prevails. Not legal advice.