I Run a Supermarket in the Apocalypse

Ye Shuhan woke up one day to discover that she had transmigrated to a post-apocalyptic world. To survive, she had to run a store according to the System's instructions, upgrading a little shop into a supermarket and mall. As she upgraded it step by step, she also uncovered the secrets of the apocalypse. She even met the man she had secretly loved in this post-apocalyptic world. Will they recognize each other? Will they make it back to a peaceful era?