I once wrote on CND that if one did not travel from time to time, one was bound to have a mental collapse from seeing the same things, scenes and people day in and day out.

• 一是可以看点闲书，二是可以清理门户，把居住环境弄得清爽一些。但是后来觉得，有如此长的时间，不出去走走，会得神经病的。于是决定还是出门。