There are quite a few Golden Cores in the Yinsha Sect, but as the saying goes, there's no such thing as an extra Golden Core, especially since they just lost a Han Ji.
And they foresee that they might encounter opposition from Taiqing, so they brought in another force—the Ten Directions Platform.
There was no other choice, as the Qinggang Sect, one of the Four Great Sects, had just fought a battle with White Pebble Beach. Although it's unclear how it was resolved, it's not something that can be relied upon in the short term; otherwise, it would essentially consume the Qinggang Sect's credibility.
The Yinsha Sect even heard that Yue Qing from Qinggang is frequently contacting Feng Jun, making it even harder to discuss matters. What if the news leaks and who would be responsible? So, they could only choose from the Wutai.
