Ka Ao's actions were tantamount to joining forces with Nian Bing against Tian Xiang, and overall their combined energy was clearly more formidable than Tian Xiang's. However, the Death Energy had condensed to such an extent that it had increased in density due to compression, making it extremely difficult to continue the contraction. It had been compressed into a black ball of near-saturated Death Energy. Even with the energy Ka Ao channeled into Nian Bing's body, combined with Nian Bing's full effort, they could not shrink the sphere of Death Energy any further. Yet to allow it to enter the Leezhong Acupoint, the volume still needed to be halved.