Feng Jun saw that the situation was dire, so he hardened his heart and decided, "Fine, I'll just use this as an experiment to see how much the quality of the Nether Bead diminishes with the Blazing Flame Talisman."
In fact, he had another unspoken reason. According to convention, even if the Nether Bead dropped, there would be an issue of ownership since everyone was watching. If he wanted to collect it, he would have to give an explanation to Danxia Heaven.
So... if the Nether Bead ended up being of poor quality, giving it to Danxia Heaven would be just fine, and he could even gain a reputation for being honorable. Why not?
This Blazing Flame Talisman was one of the rare ones from the Ascending Phase that Feng Jun had, and it was obtained from Crimson Phoenix Bailuan. However, most of the Blazing Flame Talismans he had were from that female disciple from the Crimson Phoenix Sect during the Qi Refinement phase, meant for use in Qi Refinement.