孤立无援

Explanation: Only one person or one's power, without external assistance. 　　Usage: Joint type; as adverbial, attributive; for human 　　Source: Southern Song Fan Ye, "Biography of the Later Han Ban Chao": "funeral Yanqi to China, then do not have protection functions Mu Chen. Super isolated, while the number of fat Binggong Kucha Kashgar Kou ink." 　　Examples: Is a strong enemy in the siege, ~ the circumstances, the general remains calm, calm. 　　Riddle: No Jiujia; is loyalist Thesaurus:  start a solo run, isolated force bury, Zhi-Yong complete in both respects, insulation helpless