From this point of view, Yan Yuchu's speculation was very reasonable. It was because the Yan family only had the Tianxing technique, but lacked the Tianxin technique to lay a solid foundation, that they needed three fellow practitioners to jointly withstand the powerful force of the Nine Heavens Stars.

Of course, Mu Hanyan had no such trouble in practicing the Tianxing technique, because she had already learned the Tianxin technique, and it was the Tianxin technique that had been improved and perfected by Xinghuan Qianji, which was far more exquisite than the Mu family's ancestral technique.

However, Mu Hanyan was not in a hurry to practice. The requirements of this technique were too high. It could only be practiced when one reached the level of sword master. It was still a little early now.

"How about it? Can this technique complement the Mu family technique and make up for each other's shortcomings?" Seeing Mu Hanyan sometimes giggling and sometimes lowering her head in thought, Yan Yuchu felt itchy and asked expectantly.

"Maybe it will be of some use, or maybe not." Mu Hanyan said vaguely.

This technique was useful to her, but not necessarily to Yan Yuchu. Relatively speaking, the Mu family's Tianxin technique was more of an entry-level technique, while the Yan family's Tianxing technique was more of an advancement technique. Of course, this was only relative. In reality, the Tianxing technique was too difficult, and its astrological charts were incomplete. In terms of usefulness, it was not as good as the Tianxin technique.

Moreover, she could use the Tianxing technique as a method for advancement, but it was too late for Yan Yuchu to go back and rebuild his foundation. Even if he was willing to give up all his cultivation, he was too old and had missed the best opportunity.

And if he is unwilling to give up his cultivation and insists on practicing the Tianxin technique, there will be only one result, that is, he will go astray and die without a burial place.

No one knows better than Mu Hanyan how profound and mysterious the Xinghuan Qianji technique is after being improved and perfected by the Xinghuan Qianji technique, and it cannot tolerate any mistakes at all.

"So does it work or not? Show me your skills." Hearing this ambiguous answer, Yan Yuchu became even more anxious.

"No, according to the Mu family rules, the skills must not be passed on to outsiders." Mu Hanyan said seriously.

"What...but you just said that the enemy of my enemy is my friend, and that we are in the same boat, and that we are here hand in hand?" Yan Yuchu stared at Mu Hanyan with wide eyes.

"That's for you, not for me. Haven't you heard the saying, 'Friends are meant to be sold?'" Mu Hanyan rolled her eyes.

"You...you liar!" Yan Yuchu looked at Mu Hanyan with flaming eyes and said with gritted teeth.

If possible, he really wanted to pounce on Mu Hanyan and beat her up, but he knew that if he pounced on her, he would be the only one to be beaten up.

"By the way, what did you say just now? Are you talking about sworn brotherhood?" Mu Hanyan suddenly remembered that Yan Yuchu had not finished speaking, so she asked.

"I didn't say anything." Yan Yuchu said through gritted teeth.

If even friends are sold, what will become of brothers? I'm afraid they'll be eaten until not even a bone is left.

"Forget it. If you really want to see it, I'll show it to you." Mu Hanyan felt amused when she saw how angry he was, so she stopped teasing him and threw the martial arts book to him.

This is the Mu family's ancestral martial arts method. Although it is not as mysterious as hers, the principle is the same.

"What I want is the real Tianxin Kung Fu." Yan Yuchu guessed at a glance that this was a common stuff that all descendants of the Mu family could practice, and said dissatisfiedly.