lit. heaven's net has wide meshes, but nothing escapes it (idiom, from Laozi 73)
fig. the way of Heaven is fair, but the guilty will not escape
you can't run from the long arm of the law
Definitions (粵典–words.hk)
語句
形容做壞事嘅人一定會受到懲罰 wrongdoers are deemed to be punished
天網恢恢,疏而不漏。
天网恢恢,疏而不漏。
tin1 mong5 fui1 fui1, so1 ji4 bat1 lau6 Wrongdoers will be punished after all. (Literally: Heaven's net has wide meshes, but nothing escapes it.)