Behind what looks like an ordinary door, there's unexpectedly a world of its own.
Tips
history
Rooted in Li Bai's Tang-dynasty poem 《山中问答》: 桃花流水窅然去，别有天地非人间 - 'peach blossoms drift off with the stream; there's a world apart, not of the mortal realm.' 洞天 is also a Daoist term for grotto-paradises of the immortals, which adds the 'cave-heaven' color.
culture
Classic travel-writing and tourism phrase - on site signage at Chinese gardens and scenic spots, 别有洞天 is practically a stock invitation: 'turn the corner for another world.'
