Long Chen giving Wei Wuyin the ring caused Na Xinyi's heart to quake. She knew that the ring was a precious treasure, but his willingness to give it up for the sake of Qing Qiumu, Long Tingyu, and Lin Ziyan caused her thoughts to veer towards a realization. A realization that Long Chen wasn't someone that could only take, but someone who was willing to sacrifice.
It was not just her but Wu Baozhai and Lian Yu were similarly shocked by his decisiveness to give up the ring. While they didn't know what it was, if Wei Wuyin wanted it, it had to be unfathomably precious. Their hearts moved.
Xiang Ling watched all this unfold, and while she wasn't Long Chen's woman, she was Long Tingyu's master, and she couldn't help but reconsider her opinion of him.