Reasonableness is the first thing an underground worker should consider, as Comrade "Zhu Lin" instructed and Cheng Qianfan always kept in mind.,"Team leader, I'm going downstairs to buy some cigarettes," Ding Naifei said. He had several cigarette butts at his feet and was out of smokes; his nicotine cravings were kicking in.,“This old man seems to be daydreaming.” Wang Kangnian put down the telescope and pondered for a moment, “What is he thinking about”。