The first mention of size doesn't come until at least a century later, which makes it less convincing. Nevertheless, judging by the partial remains of a ship from Zheng's era found recently in Nanjing, it is quite conceivable that ships were being built on the scale described above.
雖然如此，近幾年在南京發現鄭和當年的船體殘骸（舵），從大小比例推斷，似乎有可能接近上述數值。