Accepting a Disciple and Returning It, the Most Stubborn Master's Disciple Makes Me Invincible

[Accepting disciples + Shuangwen + Disciple development + All Heavens and Worlds + System] Traveling through the fantasy world, Gu Pingcheng became a descendant of the Taoist temple. The Taoist tradition without incense was about to be extinct, and the master-disciple teaching system was awakened. Recruiting a disciple will give you a million-fold feedback. As long as you collect the items used by the disciple, you will get a million-fold return. "Ding! Accept the Eternal Dao Body as a disciple and return the Tai Dao Body." "Ding! Accept the disciple Xiantian Qingmu Dao Body and return to Jianmu Plant." "Ding! Accept the Immortal Holy Body as a disciple and return immortality." ... The more evil the apprentice, the more invincible his attacks. People in the world only heard of Gu Ping as "his apprentice is famous all over the world", but his appearance became more ethereal and mysterious as time went by, and he became a legend among legends. Over the years, all the powerful men in the world have known that there is a line of disciples who are extremely terrifying, but no one knows the existence of the patriarch who is hidden behind the scenes. Until a powerful enemy from outside the territory came across the border, and the fierce flames hit the Taoist temple in a corner that had long been forgotten on the border of the world. Seeing that Gu Ping (still on the recliner) is about to be wiped out together with the Taoist temple... Several majestic voices came with supreme pressure. "How dare you disturb my master's cultivation?!"