are there any myths surrounding it?
Many myths and legends exist as to the exact origin of silk production; the writings of both Confucius and Chinese tradition recount that, in about 3000 BC, a silk worm's cocoon fell into the tea cup of the Empress .
History of silk
Many myths and legends exist as to the exact origin of silk production; the writings of both Confucius and Chinese tradition recount that, in about 3000 BC, a silk worm's cocoon fell into the tea cup of the Empress . Wishing to extract it from her drink, the 14-year-old girl began to unroll the thread of the cocoon; seeing the long fibres that constituted the cocoon, the Empress decided to weave some of it, and so kept some of the cocoon to do so. Having observed the life of the silk worm on the recommendation of her husband, the Yellow Emperor, she began to instruct her entourage in the art of raising silk worms - sericulture. From this point, the girl became the goddess of silk in Chinese mythology. 

Knowledge of silk production eventually left China via the heir of a princess who was promised to a prince of Khotan, likely around the early 1st century AD. The princess, refusing to go without the fabric that she loved, decided to break the imperial ban on silk worm exportation.

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where did the first painting of silk saree begin China where did silk first appear? UNANSWERABLE when did it first appear? between 4000 and 3000 BC.
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History of silk [SEP] Myths and legends
Many myths and legends exist as to the exact origin of silk production; the writings of both Confucius and Chinese tradition recount that, in about 3000 BC, a silk worm's cocoon fell into the tea cup of the Empress . Wishing to extract it from her drink, the 14-year-old girl began to unroll the thread of the cocoon; seeing the long fibres that constituted the cocoon, the Empress decided to weave some of it, and so kept some of the cocoon to do so. Having observed the life of the silk worm on the recommendation of her husband, the Yellow Emperor, she began to instruct her entourage in the art of raising silk worms - sericulture.