Character: 凭
Pinyin: píng
English:to rely on; hold
E.g. 1 这 张 支 票 凭 身 份 证 兑 现。
Zhè zhāng zhī piào píng shēn fèn zhèng duì xiàn.
The cheque will be cashed on proof of identity.
E.g. 2 请 凭 票 入 场。
Qǐng píng piào rù chǎng.
Please show your ticket upon entering.
E.g. 3 凭 收 据 退 换 产 品。
Píng shōu jù tuì huàn chán pǐn.
Hold the receipt in order to exchange/return a purchase.