There are lots of vouchers from Taobao,Tmall,Pinduoduo,JD and Meituan, you can claim them for free.

Taobao&Tmall Vouchers

Taobao&Tmall VouchersTmall Supermarket VouchersTmall Vouchers
Taobao VouchersTaobao ¥9.9 SectionEleMe Vouchers

Pinduoduo Vouchers

Pinduoduo Vouchers¥1.9 SectionPinduoduo Red Pocket

JD Vouchers

JD VouchersJD ¥9.9 SectionJD All Vouchers

Meituan Vouchers

Meituan Supermarket VouchersMeituan WaimaiMeituan ¥1.9 ection
Meituan Hotels