People in Another World, Collecting Like Crazy

[System, collection, western fantasy, multiple female protagonists] When he was 16 years old, Xingnuo sank to the bottom to save a drowning man... When Xingnuo opened his eyes again, he found that he was in a different world, where monsters were everywhere and the folk customs were "simple". Fortunately, he had a collection and trading system. Bite! It is detected that the host has successfully collected goblins and will be rewarded with 10 consumption points! [Ding! It is detected that the host has successfully collected Tianqing Poison and will be rewarded with 10 consumption points! … [Ding! You've triggered a special collection... Unlock the premium mall! Xing Nuo saw more and more consumption points in his hands, and more and more good things in the mall. In order to live a better life, Xingnuo had to collect like crazy. Many years later, he stood on the top of the mountain and discovered... How come the person he saved is the great sage in this world? !