1901年，英國旅行家立德Archibald John Little喺佢本書《Mount Omi and beyond: A record of travel on the Tibetan border》，引述天主教法國傳教士譚衛道嘅評論，「中國人就好似蝗蟲噉，所到之處寸綠不留」，原文節錄：
In 1901, the United Kingdom traveler Archibald John Little quoted the Catholic France missionary Tan Weidao as commenting in his book Mount Omi and beyond: A record of travel on the Tibetan border, "The Chinese are like locusts, leaving no green everywhere they go", excerpt from the original text: