Shou Pai (手牌)

A Shou Pai, from 'Wu Bei Zhi (《武備志》)'.

Shou Pai (手牌, hand shield) was a long and narrow hand shield made of poplar or pine wood. It was five chi seven cun tall, about one chi wide, and shaped like a concave hexagon.

This type of shield seems to be rarely used. In fact, the term Shou Pai usually refered to Yan Wei Pai (燕尾牌).