The origin of "Echo from afar" is the Biography of Xu Youxin, a draft of the Qing Dynasty, which means contact and cooperation from a distance.
Origin of "Advance despite Difficulties": Zuo Zhuan originated from Ding Gong in the pre-Qin period for six years, which means to act according to circumstances and not to do things that are actually impossible. When you know something is difficult, back off.
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The Draft of Qing History is an unfinished version compiled by Beiyang government in the early years of the Republic of China. The book has 536 volumes, centering on biographies, including 25 biographies, 53 forms and 3 biographies. According to the records, it has been 296 years since 16 16, when the Qing Taizu Nurhachi was founded in Hetuala, and 19 12, when the Qing Dynasty perished.
Zuo Zhuan is one of the thirteen Confucian classics. Zuo Zhuan is not only a historical masterpiece of ancient Han nationality, but also a literary masterpiece. Zuo Zhuan is China's first detailed chronicle work. According to legend, it was compiled by Zuo Qiuming, a historian of the State of Lu at the end of the Spring and Autumn Period, according to the History of the State of Lu. The narrative scope began in the year of Luyin (722 BC) and ended in the twenty-seventh year of Lu Aigong (468 BC).