The horse ultimately didn't kneel because Lu Xiaoyou wouldn't let it, it was proud and should not bow down to humans.
It was as if bowing to Lu Xiaoyou on bended knee before standing up again.
Lu Xiaoyou gently patted the horse's neck, "Come, I'll take you to get a saddle."
The black horse, understanding human nature, followed Lu Xiaoyou step by step until they reached Tang Suxin.
Separated by a fence from the horse, Tang Suxin felt a flutter of fear facing the towering steed.
The black horse blew out breath, scaring Tang Suxin into taking a step back.
"Miss Tang, could you help me get a saddle and bridle?" Lu Xiaoyou asked her.
Tang Suxin looked around and found the saddle and bridle behind her, so she brought them over.
Lu Xiaoyou then said, "Miss Tang, please help me put the saddle and bridle on this horse."
"I... I don't know how..."
Tang Suxin refused, not wanting to get too close to this horse that could go mad.