紧要关头

Explanation: Urgent and important moment. Yang Shuo, "Secret Train": "time so tight, if not tonight open the West Fuxin, would not be Dan big mistake! Open it! This critical juncture in determining victory or defeat." Zhao, "Three Mile Bay, after writing": "storytelling of the author and artist, often said that critical moment to stop and ways to retain their audience." is also a "critical juncture." Cheng hazel tree "good governance": "At this critical juncture of life and death, some people looked around to find shelter." 　　Riddle: Head speed to take Kung