The di (also sometimes known as the dizi), is a Chinese transverse flute. Most di are made of bamboo, which explains why dizi are sometimes known by simple names such as "Chinese bamboo flute." However, "bamboo" is perhaps more of a Chinese instrument classification like "woodwind" in the West.
The pipa is a four-stringed Chinese instrument, belonging to the plucked category of instruments. Sometimes called the Chinese lute, the instrument has a pear-shaped wooden body with a varying number of frets ranging from 12-26. The pipa appeared in the Qin Dynasty and developed by the Han Dynasty. It is one of the most popular Chinese instruments and has been played for nearly two thousand years in China.