Both Stems and Branches (animals) have their own Attraction Relationships. When certain two stems are together with Attraction Relationship, the energy of a certain element might increase. When two or three branches are together with Attraction Relationship, the strength of a certain element might increase, too.
When Yang Wood and Yin Earth are together, Yang Wood might transform into Yang Earth if Dog, Dragon or Horse under Yang Wood and Earth Stem of Earth next to Yang Wood.
When Yin Wood and Yang Metal are together, Yin Wood might transform into Yin Metal if Chicken, Sheep or Cow under Yin Wood and Stem of Metal next to Yin Wood.
When Yang Fire and Yin Metal are together, Yang Fire might transform into Yang Water and Yin Metal might transform into Yin Water, if Rat, Monkey or Dragon under Yang Fire and Pig under Yin Metal as well as Stem of Water next to them.
When Yin Fire and Yang Water are together, Yang Water might transform into Yang Wood and Yin Fire might transform into Yin Wood, if Tiger or Dragon under Yang Water and Pig or Rabbit under Yin Fire as well as Stem of Wood next to them.
When Yang Earth and Yin Water are together, Yang Earth might transform into Yang Fire and Yin Water might transform into Yin Fire , if Tiger or Horse under Yang Earth and Snake or Rabbit under Yin Water as well as Stem of Fire next to them.
When Rat and Cow have are together, Rat might transform into Wet Earth (Cow or Yin Earth), if Yang Earth or Yang Fire above Rat and Yin Earth above Cow.
When Dragon and Chicken are together, Dragon might transform into Yang Metal if Yang Metal above Dragon and Yin Earth above Chicken.
When Snake and Monkey are together, Snake and Monkey might transform into Yang Water if Yin Water above Snake and Yang Water above Monkey.
When Tiger and Pig have are together, Pig might transform into Yang Wood, if Yang Water above Tiger and Yin Wood above Pig.
When Rabbit and Dog are together, Dog might transform into Yang Fire and Rabbit might transform into Yin Fire if Yang Wood or Yang Fire above Dog and Yin Fire above Rabbit.
The Water will be very powerful when Monkey, Rat and Dragon are together an Yin Water or Win Water appear in the Stem.
The Wood will be very powerful when Sheep, Rabbit and Pig are together an Yin Wood or Win Wood appear in the Stem.
The Fire will be very powerful when Tiger, Horse and Dog are together an Yin Fire or Win Fire appear in the Stem.
The Metal will be very powerful when Cow, Chicken and Snake are together an Yin Metal or Win Metal appear in the Stem.
The animals are in the same Five Element's group together, therefore the element representing them is very powerful.