First, take the whole plant out of the flowerpot, and clean up the soil attached to the root.
Take a sharp scissors, carefully check the root of the plant where has rotted, and then use scissors to cut off the rotten roots.

Prepare a basin of solution. The solution is made of the diluted dolindra solution or the diluted potassium permanganate solution. Soak the plant with the rotten roots in the solution for more than an hour.
Take the plant out of the solution, find a cool place, place the plant carefully in that place, about a day, wait for it to dry naturally

Need to prepare another pot of soil for its growth and development, then how to mix this soil? We can choose to use saprophytic soil plus sandy loam and river sand, and mix them according to the ratio of 2:2:1; or we can use saprophytic soil plus peat soil and half of garden soil to mix together; if we can't find these peats or are too lazy to prepare them, we can directly buy the cultivation soil of Clivia in the flower market.
The bottom of the flowerpot is paved with a layer of permeable things, such as ceramsite or brick particles, or cinders. After that, fill the top with nutrient soil, and finally replant the plant in it, cover the mud layer, and water the mud layer through.
At this time, you can put the flowerpot on the north balcony for maintenance. Do not expose it directly to the sun, and move it after the plant adapts. Move over