Is Indira a swordsman with Lv Dongbin? Did Chivalrous Silver Generation finally die?

After his death, Lv Dongbin and his friend Jia Ren met the Millennium Snow Jiao Yindai who was making a disaster. Lv Dongbin helped Yindai successfully survive the disaster. In order to repay her kindness, Yindai stayed with Lv Dongbin, but they had feelings. However, Yindai was harmed by this delicate butterfly and disappeared. Ask Han Zhongli and Zhang to save Yindai. Han Zhongli and Zhang told them that as long as they could. Getting the resurrection grass can save the silver generation. Lv Dongbin got back the grass with his sincerity, but failed because of intrigue. Han Zhongli and Zhang gave a way to save Yindai, but it ended in failure. Perhaps this is God's will, the Silver Generation is doomed to die, and Lv Dongbin is doomed to become an immortal.