The term Peng Lei（蓬累）first appeared in the biographies of Laozi and HanFei in HistoricalＲecords,but it has not been seen in other literature contemporaneous with Historical Records. Therefore, there should be other written forms of Peng Lei（蓬累）.Peng Lei（蓬累）is regarded as Fu Luo（蚹蠃）, which is now called snail. First of all, they have similar ancient pronunciation , and there exist the possibility of different written forms of the same word.Secondly, the characteristics of? Fu Luo（蚹蠃）crawling inside the hidden shell conforms to the meaning of hidden expressed by Walk like Peng Lei.Finally, in modern Chinese dialects, snail has a trivial name Pengluo（蓬螺）.Walk like Peng Lei（蓬累而行）is a metaphor for a gentleman who is born at an untimely time, he must hide and crawl like a snail, not only hiding his body but also his wisdom.