2000 Years of Contract

With his dying breath, the orange-haired man made his promise. Unfortunately, the memory of it was lost as he was reincarnated in his next life. Zhongli on the other hand had a clear memory of the promise, the contract he was still keeping after all those years.

Could Childe remember his past life or would he spend the rest of his life not knowing about it.
How much longer does Zhongli need to wait for him.

The picture was taken from: https://www.pinterest.com/pin/135671007536285935/