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The Chinese dictionary explanation of "backer" is: refers to the power to rely on. Detailed explanation of the person or force that the metaphor can rely on and rely on. Chapter 24 of "The Scholars": "Bao Wenqing had no backers in Beijing. He was originally from Nanjing, so he had to pack his luggage and return to Nanjing." Qu Qiubai's "Two Malhua Compositions in Gorky's Early Years": "They had backers - they had land. "Zheng Zhenduo's "Whirlpool": "'He also used Lao Hu as his backer.' "In fact, "backer" is a word derived from Feng Shui, which refers to the hill behind the house, just like the back of a person. Just like having something to lean on, it is very auspicious to have a hill behind your house to lean on.