染 nine deeps into a liquid from a tree, it contain a 九, it is a gradual process.

染 related to liquid, 熏 related to smoke. Water and fire are the medium. These would not meet Mao's taste, who needs 烧, faster, nine thousands years are too long, a fire is a day's job.

染 there we were from two different dye, red and black. They are not simply banana.

李可染:
http://www.guxiang.com/yishu/shuhua/shangxi/likeran/work1.htm

冉茂芹 is a prize winner in portrait competition:
http://www.yimaukun.com/site%20files/index_landscape.htm

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