Possible links to help revise Mandarin:
Numbers: https://m.youtube.com/watch?v=2eLP3FuuEVs
Colours: https://m.youtube.com/watch?v=HFrHv19c2v4
Body Parts: http://www.youtube.com/watch?v=g3D0Bd0Fwxo
Two Tigers Song : http://www.youtube.com/watch?v=rshE1d2RrPg
Or the BBC Bitesize has Mandarin video clips:
Numbers: https://www.bbc.co.uk/bitesize/clips/zt3hfg8
Stories, poems and songs: http://www.bbc.co.uk/bitesize/topics/zsr76sg/resources/1