Historically, Liu Zhang surrendered to Liu Bei. In the v104 Exclusive scenario, Liu Zhang has a "Betrayal Meter." Every turn you don't defend a vassal, loyalty drops. To win, you must use Zhang Ren’s guerrilla tactics to bleed Liu Bei’s supplies in the mountains of Yi Province.
Koei Tecmo fine-tuned specific historic characters to better match their real-world capabilities and historical rivalries. romance of the three kingdoms xiv v104 exclusive
For more details on the expansion packs and newer features like the "Power-Up Kit," you can check the official Koei Tecmo RTK XIV Portal or how the Power-Up Kit changes these version features? ROMANCE OF THE THREE KINGDOMS XIV Portal Site Historically, Liu Zhang surrendered to Liu Bei