How to Water a Black Bone Tea Bonsai? A Full Guide to Practical Tips

I recently bought a few mature black bone tea (Dracaena cambodiana) stumps from Guangdong. According to the seller, I should water them every day, pouring water over the leaves and branches as well. At the time I did not think much about it, so I watered them every single day, and when I saw the leaves and trunks were dry I also misted them. The potting soil was acidic loess mixed with 3 parts sand, with some nutrient soil blended in. A week later, the leaves on two of them had lost their vigor.