A scholar knows everything when he doesn't go out

To make a mistake - píng shì jié zhé

severe law - lóng xíng jùn fǎ

nothing to be feared - bù zú wéi yì

Wren twig - xī fù jiāo zhī

not cry over the spilt milk - pò zèng bù gù

When the moon shines, it will eclipse - yuè yíng zé shí

Escape from nature - dùn tiān wàng xíng

dull - sǐ yàng huó qì

one 's word does not express his idea - cí bù dá yì

come to a standstill - dùn zú bù qián