Ye Mo didn't keep trying to tear open the nether realm barrier. Samsara was heaven dao. Life and death was a part of natural order, he shouldn't intervene in this.
If there was no samsara, this world would be in chaos.
Duanmu Yuebo wanted to open a samsara path from Divine Dao Realm to nether realm just so immortals from the Divine Dao Realm can enter samsara after death.
Realising this, Ye Mo suddenly felt easy. He believed that one day he would be able to see sister Yan and Yun Bing again. He would be able to see the friends that were gone. Perhaps they might not remember him nor recognise him but so what?
Realising this, Ye Mo's mind opened up and the world became clearer to him. Those injuries instantly disappeared and his dao waves became more perfect.
Len Shuoqi could clearly see this and he smiled and saluted with his fists "Congratulations on getting stronger immortal friend Ye."