Original watercolor postcard Green Oak

Green oak wood has a hard texture and is used as a material for many construction materials and appliances. In the past, it was also often used as railway sleepers. Nuts are rich in nutrients such as starch and protein. It is food for large birds, squirrels, flying squirrels, Taiwan black bears and other animals. However, it tastes bitter and not suitable for human taste, so do not eat it. Original watercolor postcard, The back is completely white and can be filled with words. But please remember to leave the stamp and delivery address~ The size is about 10.5*14.8 cm. Feel free to ask any questions.