Genshin Impact: Return of the Immortal Realm starts with being chased by Shadow

have you eaten?Come in and eat me without eating. The dizziness of spinning around came over you. In a blink of an eye, Lin Jinnian left the fairyland where he had lived for a long time. What were in front of him were slimes and Qiuqiu people?Returning to Teyvat again, I found that the familiar people had disappeared 500 years ago.Is the following story regret and regret, or hope and warmth?