Your property tax bill is based on the assessed value of your property, any exemptions you qualify for and a property tax rate. The assessed value of your property is determined on a certain date.
Although these techniques were strictly controlled by imperial decree, eventually silkworms were smuggled out to establish sericulture in Korea, Japan, and India. It seems to be first produced in China around 3000 BC. Silk was spun in ancient China from silkworms (b<i>ombyx mori</i>) as early as 5000 BC. Over the period from 2700 BC to 1600 BC, domestication techniques enabled extensive production of silk thread and cloth.
Foreign customers also call silk the headspring of beauty, for products made of it are rather flowery. China is the earliest country raising silkworms and weaving silk. It is said the silkworm was first raised by Lei Zu, wife of the Yellow Emperor. According to archaeological speculation, the Chinese have begun to raise silkworms, and pull and weave silk since the middle Neolithic Period 5000-6000 years ago.