Douban: Rebirth of Lin Xiuya, Getting Yao Lao at the Beginning

Traveling through the Dou Qi Continent, the system is bound at the beginning. Decades later, when I first came to Canaan College, I got Yao Lao. After the system woke up, it actually told itself that it was bound to the wrong owner, but can you tell me why I got Yao Lao's ring at the auction, so the system... Protagonist: "System, have you gone to Xiao Yan's side?" Xiao Yan: "How does he know that I have a system? Although this system is a medicine refining system..." Protagonist: "But why does Xiao Yan still have the same fighting skills, but the alchemist is so superb..." Protagonist: "Xiao Yan is bound to a... Medicine refining system!"