My ancestor Ren from Qingyang County fell ill due to the mountain mists. Suddenly, he encountered an immortal teacher who clapped and chanted: "Take the convenience, drop the convenience; if it were not for the influence of the mountain mists, how could one gradually return from illness?" The teacher invited him to stay at the inn, where he took out a pill made from

仙师拈药一丸，此丸以枪消5.5克生蒲黄(罗细末)1.2克僵蚕末皂角末冰片各0.3克所制成，

5.5 grams of fresh Acorus calamus (powdered),

1.2 grams of silkworm powder,

0.3 grams of soapberry powder

0.3 grams of borneol, all mixed together.

He instructed our to take it with cool water. Immediately, his stomach rumbled like thunder, and he expelled a large quantity of harmful substances; his illness was instantly cured. The immortal teacher said, "This illness arises when the organs are weak and vulnerable. If one's vital energy is strong, how could such an ailment enter?" My ancestor begged him for the recipe, and the teacher wrote these words to pass on. When asked for his name, the immortal teacher replied, "My surname is Zhang, and my given name is Baizi. This method can be practiced by anyone, regardless of gender. It can dispel a hundred diseases, strengthen the body, and extend life. One would become an immortal on land." After saying this, he vanished. Even to this day, this method is not lightly shared. The teachings have not been fully passed down even to my family and their relatives. Recently, due to the repeated requests from Master Wu, Master Chen, Brother Feng, Brother Liu, and Brother Pei for this book, I have decided to reveal the immortal teacher's writings to you all, naming it "The Scripture of Land Immortals."