Thirdly, contemporary records concerning Zheng He tell a different tale from those of a century or more later. Basically, the closer the sources are to Zheng He's era, the more credible they are. The problem is that the earlier records don't touch on the size of the ships.
第三，研究鄭和的史料來源當中，寫作年代從同時期到事後一百多年不等，基本上，年代愈近可信度愈高，問題是，早期的記載並沒有提到船體大小，我們目前所知道的相關資料，至少是百年以後的記載，站在科學的角度，必須打點折扣。