Li Chen, Zheng Kai, Sha Yi, Zhou Shen, Fan Chengcheng, Song Yuqi, Zhang Zhenyuan, Meng Ziyi, Zhou Chuanxiong, Angela Chang, Charlene Choi, and Wang Heye gathered in Wuhan, a city of rivers and lakes, for a journey through time both retro and modern. To earn more Y2 coins, the members faced a "you gesture, I guess" challenge. Fan Chengcheng and Wang Heye frantically gestured while running, their facial expressions losing control. Song Yuqi and Charlene Choi mimicked flip phone gestures, delivering a soulful performance. A familiar musical prelude played at the skating rink, and a "I Love Memorizing Lyrics" competition began. Mis-singing triggered a toe pressure board penalty, unlocking a pain mask with a single click. Zhou Shen delivered a steady performance, delivering a powerful performance, Zheng Kai showcased his quick reactions, and Li Chen proved himself with his playful singing style.

Three teams battled in a five-minute round-robin match. Area A sprinted to Area B, outsmarting them. Sha Yi mastered the art of "hanging on nails," while Fan Chengcheng gritted his teeth while stacking blocks. Song Yuqi wowed the audience with two impressive performances, earning praise from the crowd. The childhood classic "CrossFire" came to life, with this live-action version of the game jacking up the tension. Winning was achieved by completing the level without dropping the dice. The seemingly simple rules were fraught with difficulty. Angela Chang and Charlene Choi were the first to compete, repeatedly failing in the shaky levels but growing stronger with each passing moment. Song Yuqi took over, showcasing her cleverness, while Li Chen provided off-court support. Zheng Kai's immediate presence was divinely inspired, as he moved with impeccable precision.

Under the Wuhan Changjiang Media Building, all members underwent a "workplace security check." When "temporary worker" Puppy identified two "cow horses," a crisis unfolded. Members sitting next to the "cow horses" would be infected with the "workplace" factor, and only by passing the challenge could they uncover clues to the "cow horses'" identities. Aboard the Wuhan Guqin sightseeing cruise ship, a "letter battle" competition began.

The first match began at the Yellow Crane Tower. To obtain information about the relay stages, the members had to recite ancient poems within a time limit. The "Brotherhood" collectively tapped into their student DNA. Zheng Kai focused on "understanding the poetry to aid memory," while Fan Chengcheng engaged in "repeater mode," producing frantic recitations, resulting in numerous setbacks. At the Wuhan Hehe Basketball Arena, a 100-person flag-pulling competition awaited the "Brotherhood." To win, the members had to pull a total of five flags over five rounds. Song Yuqi and Zhang Zhenyuan raced at top speed, leaving the outcome uncertain until the very last second. The Oriental Horse City International Racecourse, China's first international-standard racecourse, transformed into a training ground, where the "Brotherhood" encountered their most demanding prop: a five-ton bulldozer. The next stop, a 13km marathon relay race, was held at the Wuhan Garden Expo Park