During this period, if any cracks develop or rot sets in, all the painstaking efforts are in vain. The polishing process demands equally painstaking endeavors. The bamboo poles are sandpapered, and pressure must be applied evenly to the accompaniment of an even rhythm.
在製作過程中，打磨也是一門極難的功課：竹塊在沙紙上打磨時力道必須均勻，心中默默地記數著一、二、三、四，好像打拍子一樣。