Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Element | Wood | Fire | Earth | Metal | Water |
| --- | --- | --- | --- | --- | --- |
| Color | Green | Red | Yellow | White | Black |
| Direction | east | south | center | west | north |
| Planet | Jupiter | Mars | Saturn | Venus | Mercury |
| Heavenly creature | Azure Dragon 青龍 | Vermilion Bird 朱雀 | Yellow Dragon 黃龍 | White Tiger 白虎 | Black Tortoise 玄武 |
| Heavenly Stems | 甲 , 乙 | 丙 , 丁 | 戊 , 己 | 庚 , 辛 | 壬 , 癸 |
| Phase | New Yang | Full Yang | Yin/Yang balance | New Yin | Full Yin |
| Energy | Generative | Expansive | Stabilizing | Contracting | Conserving |
| Season | Spring | Summer | Change of seasons (Every third month) | Autumn | Winter |
| Climate | Windy | Hot | Damp | Dry | Cold |
| Development | Sprouting | Blooming | Ripening | Withering | Dormant |
| Livestock | dog | sheep / goat | cattle | chicken | pig |
| Fruit | plum | apricot | jujube | peach | chestnut |
| Grain | wheat | beans | rice | hemp | millet |
Question:
Which Metal has an Element of heavenly stems?
Answer:
庚 , 辛