《农桑辑要·禽鱼·鱼》
到第三年，可得到一尺长的十万尾，二尺长的五万尾，三尺长的五万尾，四尺长的四万尾。
至明年，得长一尺者十万枚，长二尺者五万枚，长三尺者五万枚，长四尺者四万枚。
In the third year, you can get 100,000 that are one foot long, 50,000 that are two feet long, 50,000 that are three feet long, and 40,000 that are four feet long.