Journey to the West is the 4th Epic World in Plants vs. Zombies 2 with 20 Levels. which was in turn based on a Ming Dynasty novel by Wu Cheng'en with the same name. The zombies in this world are loosely based off those that appear in the storyline of the novel.
The Plants that you can obtained in this world (My Take): Hazelnut Ball: Night 1 Meteor Hammer Master: Night 11 Infi-Tall-nut: Night 15 Lychee: Night 19 Super Bean: 15 Seed Packets Super Citron: 15 Seed Packets