In the end, I just dropped it in the washing machine and hoping for the best. Thank God, everything was just fine. It looked as nice as can be and it smelled good.
I use cold water and I just let it dried under the fan. While drying, I just notice the date I embroidered on the backing. It was the date I finished this quilt, 28 September 2004. It was a mooncake festival night and it was 5 days before Lauri born.
The date on the backing
Everything is fine