山重水复疑无路，柳暗花明又一村 shānchóngshuǐfùyíwúlùliǔ'ànhuāmíngyòuyīcūn light at the end of the tunnel
literally meaning that where the mountains and rivers end and one doubts there is a way forward, through the dense willows and bright flowers another village appears; a metaphor for finding a way out of a hopeless situation or a sudden change for the better during a crisis
