<Yuan Hai Zi Ping> , there is a chapter talking about the 5 elements inter-relationship with each other in terms of the chemical effects into create (or give birth or produce) , destroy, restraint and defuse, with examples for illustration.
- Metal produces water, but too much water would be the metal to sink.
- Water feeds wood, but too much wood would be the water to retreat (drying up)
- Wood lights up fire, but too much fire would burn the wood into ashes.
- Fire produces earth, but too much earth would bury down the fire.
- Earth produces metal, but too much metal would change the earth. (to metal)
------------------------------------
渊海子平 - 《论五行5剋制化》　　
金能生水，水多金沉；水能生木，木盛水缩；木能生火，火多木焚；火能生土，土多火埋；土能生金，金多土变。
----------------------------------
AFTERWORD
you may interpretate the above scenario into the bazi-10 gods method to see the relationship and impact among the DR IR (direct resource, indirect resource) and the Daymaster, and SE SB (self-elements, sibling elements) for understanding.
http://tiensum.blogspot.sg/