Spirit Spiders that have lived for more than a thousand years in The Other Shore are extremely rare, and the Golden Back Sky Spider before him was clearly far from meeting that criterion. However, even an ordinary Spirit Spider could form a silk web to weave into a Brocade Sack Treasure Bag, collecting all kinds of poisonous insects and urns.
The gold ship left by Emperor's Teacher Guang Cheng Zi weighed millions of pounds. Additionally, being located in the Yuanjiang Water Eye and influenced by the magnetism of the Earth's Lungs, even a heavenly being would struggle to exploit it effectively.
The key to treasure-hunting in the Yuanjiang lies with a thousand-year-old Spirit Spider capable of pulling it out. There are two individuals in The Other Shore who have such spiders: Han Xian Zi, the wife of Da Fang Zhen Ren Shentuo Yixiu, and Poor God Zheng Dianxian.
