How should the insertion operation of the red-black tree of the following link continue to correct the color?

https://www.cnblogs.com/skywa.

how do I correct the color when the two red nodes are transferred to the right in the last picture?
I look at other materials, the legend Reagan node and its right child node are black, so there is no problem, but in this example, the root right child node is red, I can"t think of how to proceed with the color correction after the third step.

Algorithm data-structure red-black-tree

Jan.08,2022

with the help of blogger https://blog.csdn.net/tyuopwa.
, you only need to turn the two children of the root node black.

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