2. The boat is a Chinese character, and the pinyin is Ji 'an. The main reason is ㄐㄧㄢ _. The radical "supervisor" is simplified to "see". Save strokes and simplify them according to ancient calligraphy. From ships and prisons. Be prepared for danger in times of peace is a model of supervision. The two paradigms of ship and supervisor are superimposed. The square template house is a model ship, just like a prison ship.