“不轻言放弃”是他从警三十余年来固守的职业要求,这成就了他辉煌的刑侦业绩。他侦破的第一起案件是发生在黑龙江省东南部密山市(当时叫密山县,1988年经国务院批准,密山撤县建市)的黄牛被盗旧案,在三十多年前,这可是大案。由于缺少线索,案件侦破半年多,仍没有什么进展。最终,他决定用最笨的方法,即和派出所的另一名民警推着自行车,从案发地开始一点儿一点儿找线索。沿途走访了四天、行程近九十公里,他们来到了密山县正阳煤矿供销社。一个售货员向他们反映了一条重要线索:他家邻居张大爷前些日子捡了个大便宜,在市场上花了不到一头牛的价钱买了两头健壮的大黄牛。卖牛的人长着一个鹰钩鼻子。当时,张大爷为表示感谢,曾邀请“鹰钩鼻”到他家吃米饭, “Do not give up ” is his occupation requirements from thirty police more than thirty years, which contributed to his brilliant achievements in criminal investigation. The first case he detected was a case of cattle being stolen in Mishan City, southeastern Heilongjiang Province (then called Mishan County and approved by the State Council in 1988 and the city was established in Mishan County). Over thirty years ago, But a big deal. Due to lack of clues, the case has been cracked for more than six months and no progress has been made yet. Eventually, he decided to use the most stupidest way, that is, another police station with a police officer pushing a bicycle, starting from the incident a little bit to find clues. Four days along the way, travel nearly ninety kilometers, they came to Mishan Coal Mine Zhengyang supply and marketing cooperatives. A salesperson reflected an important clue to them: Grandpa Zhang, a neighbor of his family, picked up a big bargain in the other days and bought two robust big cattle at a price less than one cow on the market. The ox man has a hooked nose. At that time, Uncle Zhang expressed his thanks, had invited “hook nose” to his house to eat rice,