If Su Chen was willing to acknowledge it, then he would be Su Chen's master; if Su Chen was unwilling to acknowledge it, there was nothing he could do.
Take it by force?
That would be somewhat inappropriate, especially given Su Chen's current situation, which was completely different now. After all, they both knew very well that Su Chen had the Undying Blood Kui and the Heavenly Kui Emperor backing him, not to mention the Death-Burying Old Man holding down the fort. If they tried to take it by force, they might not succeed.
Chapter 1092