be extremely cruel and merciless

Recruit and buy horses - zhāo jūn mǎi mǎ

slim - chǔ yāo xiān xì

be at one 's wits ' end - zhì jìn néng suǒ

unaltered forever - wàn shì bù yì

unheard-of - qián gǔ wèi wén

restrictions and fetters - tiáo tiáo kuàng kuàng

value every spare moment for - cùn yīn shì xī

have a foot in two camp - jiǎo tà liǎng zhī chuán

Split into two - fēn xīng pī liǎng

this regret shall last for evermore - cǐ hèn mián mián