留一手

lǎo shī fu bǎ quán bù jì yì chuán gěi tú gōng bù xiàng cóng qián nà yàng liú yī shǒu le

老师傅把全部技艺传给徒工，不像从前那样留一手了。

No longer holding back on the odd trick of the trade like before, the old master taught all his skills to the apprentice.

wǒ rèn wéi wǒ men yīng gāi liú yī shǒu

我认为我们应该留一手。

I think we should hold back a trick or two.

nǐ hái zhēn shi yǒu liú yī shǒu de jǐn náng miào jì ne

你还真是有留一手的锦囊妙计呢。

You surely have a card up your sleeve!