Please briefly introduce the relevant plots of Journey to the West and Pig Bajie.
Pig Bajie: Wuneng, whose real name is Wuneng, is the second disciple of Tang Priest. He turned out to be Marshal Tian Peng of the Jade Emperor. Being kicked out of heaven for flirting with Chang 'e, he was reincarnated in the world, but he mistakenly threw a pig's fetus, and his face was similar to that of a pig. He can transform, he can walk on clouds, and his weapon is palladium with nine teeth. When the Tang Priest passed through Zhanyun Cave for Buddhist scriptures, Pig Bajie was surrendered by the Monkey King, and became a good helper for the Monkey King to protect Tang Priest. Bajie is gentle, honest and simple, and has great strength, but he is lazy. He likes to take advantage of petty advantages and covet women. He is often fascinated by the beauty of monsters, and it is difficult to tell the enemy from me. He listened to his brother and was loyal to his master, which made a great contribution to Tang Priest's learning from the scriptures. Finally, he was named "the altar messenger". He is a comic figure deeply loved and sympathized by people.