The mullet catching season is very brief. Fishermen often say that the grey mullet only appears between ten days before and ten days after the beginning of winter. In fact, the "harvest season" when they are forming schools and are easiest to catch is only about ten-plus days per annum.
捕烏期間甚短，漁民常說烏魚只在冬至前後十日出現，其實烏魚群聚集、易於捕撈的「盛魚期」，每年只有十餘天。