My Childhood Friend Came to Me in a Dream

If this is only a dream, how wonderful it would be never to wake up. In the dream: you're my childhood friend, and I'm not your mentally ill friend. There are many things in Ma Xiaozhu's world, but no reality. In Chu Ziqing's world, there are Ma Xiaozhu and reality. In the end, who becomes whose salvation? (The organization appears again. Who is the real test subject for the L drug? Ma Xiaozhu's condition is getting worse.)