悬车束马

Explanation: Described the obstacles. 　　Source: "Let Mandarin phrase" hanging car beam horses over the line with the provision of too much of the river caught the ear of summer. "Wei Zhao Note too the line, the provision of ear, Yamana also. Arrested the summer, the provision of the ear of the river also. III by key mountain valley insurance, so the hanging hook of their car, forced his horse to cross beam." 　　Examples: A North Cyprus Public Research, ~, then was making pre-Jia Meng, Xun reference Mianzhu. ★ Zhou Yu, "General Ismail week-old American Shinto monument"