Li-Fan Chen says to YSITD https://tw.news.yahoo.com/%E7%A9%BF%E8%B6%8A%E6%99%82%E9%96%93%E6%88%90%E7%9C%9F-%E7%BE%8E%E4%BF%842%E5%B0%8F%E5%B3%B6%E7%9B%B8%E9%9A%944%E5%85%AC%E9%87%8C-%E6%99%82%E5%B7%AE%E7%AB%9F%E9%81%9421%E5%B0%8F%E6%99%82-083339256.html