The process of it was called Sericulture.
It was the action of raising silkworms and making silk. It started in the Shang Dynasty and was only made by regular women, and they were experts at Sericulture.
Porcelain was famous,eventually all over the world. Even though it is called China Porcelain it is not made in China.
The Europeans tried to copy it, but they were unsuccessful until 1575 when India made a copy.
It was rebuilt by the Ming Dynasty.It was used to protect Northern China from attacks. It was originally built by the Qin Dynasty,they