According to Wen Guang's circumstances, reincarnation and recultivation are his only options. But after all, navigating the cycle of reincarnation is fraught with peril, even if Lu Qingfeng has connections like the Bull-headed Yin God; unpredictable things can happen, not to mention the possibility of entirely changed emotions and personality after reincarnation.
By the time one has made some achievements in cultivation and awakens past wisdom, he might find that 'today is not yesterday, and I am no longer myself.' Wen Guang had only just found their teacher and had not yet reunited with fellow disciples such as Lin Feng and Zhang Yang; he was reluctant to enter the cycle of reincarnation.
Lu Qingfeng agreed with his wishes.
Wen Guang wanted to contribute in Lingnan, and Lu Qingfeng likewise complied. Rather than let him idle away in confusion, it was better to keep him busy.