The Old Ancestress Says Survival Games Are a Piece of Cake

“Congratulations on logging into the survival game. Let's open the door to a new world together!” A whisper in her ear jolted Shang Yirou awake. The 24th century's wildly popular full-dive game, Nightmare, suddenly allowed players to log in but not log out. Countless people were truly trapped in this aptly named “nightmare game.” A dark underwater city, labyrinthine tunnels and mechanisms, 49 unfamiliar players... The system's prompts carried an eerie tone. Gender, money, and status meant nothing here. Reality and the game had become completely entangled, and only by relying entirely on herself and outplaying the others could she hope to survive. Randomly shifting secret rooms, the mysterious song of a mermaid, seawater that could flood in at any moment, and a deadly contest between seven teams, where four advanced and three were eliminated... Everything told Shang Yirou that she, too, had entered the nightmare game. 【System Notice】: Congratulations, player Shang Yirou, on solving the instance world's premise! 【Instance Notice】: Congratulations, player Shang Yirou, on speedrunning the instance! 【System】: “Host, how do you always clear the game?!” Shang Yirou: “Did you think I spent those two hundred years asleep?” (Don't ask, don't ask. The male lead is Ji Chao.)