《周礼·冬官考工记·轮人&輈人》
辐宽而凿浅，辐就会因此而摇动，即使有好的工匠，也不能使之牢固；凿深而辐狭小，就会使辐牢固有余而强度不够。
辐广而凿浅，则是以大扤，虽有良工，莫之能固。
If the spoke is wide and the hole is shallow, the spoke will wobble because of this, and even a good craftsman will not be able to make it secure; if the hole is deep and the spoke is narrow, the spoke will be more secure than necessary but not strong enough.