The Treasure Vault key was now the Great Elder's only bargaining chip and his last trump card. When he had first obtained the key to the Treasure Vault, the Great Elder was so excited that he lost sleep over it, as it signified immense wealth. Although the Tang Family was a semi-hidden Ancient Martial Family, when compared to the true hidden cultivation sects, the discrepancy was quite staggering—so large it was almost unimaginable.
In terms of resource collection, they were far behind those hidden cultivation sects. Thus, the Tang Family's reliance on money was still quite substantial. This was the reason the Tang Family specifically arranged for family members to engage in business activities in SH City. They needed money to sustain their luxurious lifestyle and, even more so, money to collect cultivation resources in society.