So Sun Yuan-hsun has to work at dead of night, when one can't see one's hand in front of one's face, yet cannot use a light either for fear of frightening the birds away. A few months ago when he was at Fushan on the upper reaches of the Nanshih River, he didn't get so much as a glimpse of an owl.
要在伸手不見五指、打燈光又會嚇跑鳥的晚上工作，前幾個月孫元勳在南勢溪上游福山，可以說是連鳥都沒賞到。