From this perspective, Yan Yuchu's conjecture was quite reasonable. It was precisely because the Yan Family only had the Sky Star Technique, but lacked a foundation-setting cultivation technique like the Heavenly Heart Technique, that they needed three cultivators to collectively withstand the powerful force of the Nine Heavenly Stars.
Of course, Mu Hanyan had absolutely no such trouble when it came to cultivating the Sky Star Technique, because she had already learned the Heavenly Heart Technique, which had been improved and perfected by the Star Illusion Thousand Machine. It was far more exquisite than the Mu Family's Inherited Skills.
However, Mu Hanyan wasn't in a hurry to cultivate; the requirements of this technique were too high, and it could only be practiced once one reached the realm of a Sword Master. For now, it was a bit too early.