两虎相争

Explanation: Two tigers fighting each other. Powerful metaphor of the two-phase fight. 　　Source: "Second strategy Qin Warring States": "Today the two tigers fighting man Zheng, who die of small and large who must hurt." "Historical Records Chunshenjun Biography": "There is nothing better in the Qinchu, this smell great Wang Yufa Chu, this phase still fighting two tigers. "I Messire official to the next doctor, I do not know why, if the recent dispute with the doctor Zhaozheng Qing Dynasty, I think ~, there must be an injury. ★ Ming Xu Yuan "Eight Heroes ZHANG Pinghua" 　　Examples: I Messire official to the next doctor, I do not know why, if the recent dispute with the doctor Zhaozheng Qing Dynasty, I think ~, there must be an injury. ★ Ming Xu Yuan "Eight Heroes ZHANG Pinghua"