流连忘返

Explanation: Reluctant to leave when the fun nostalgia. Nostalgia must have forgotten to go back. 　　Usage: Joint type; as predicate, attributive; with a compliment 　　Source: Qin Meng Ke, "Mencius Lianghui down": "From the shed return again and again that ilk, from the stream return again and again that the company, from the insatiable beast that of Chong, alcohol-free music that's dead tired." 　　Examples: Four o'clock free travel, phase-by-chord, ~. (Ming Feng Meng, "Eastern Zhou Chi," eighty-first back) 　　Riddle: Not return to the vast river Thesaurus:  lose no time in telling each other, hold one's sides, Be remote in time or space Forget to return, Loiter Forget the anti-, pleasure is inexpressible, The joy is boundless, feel extremely flattered; be surprised at the unexpected honour; receive favour with awed excitement Antonym Group:  find it unbearable to recall, Viscera All split, undergo untold sufferings and pain