时光是会说谎的毒药
[shí guāng shì huì shuō huăng de dú yào]
Translates to 'Time is the deceptive poison'. This expresses a belief that time can mislead people. For example, memories can fade, youth vanishes, things once promised don't come true, which all suggest how time can bring pain similar to that of 'poison'. But also implies deep emotions like reminiscence about unfulfilled promises or changes brought by time passing.