Edit: I digged deeper and found that it was a coincidence that Jupiter was called the Wooden Planet. The Chinese assigned the name not because they were able to observe the wood like texture (due to the lack of telescope), but they were able to observe the existence of the planet with naked eye as early as 2300 years ago, along with the Mercury, Venus, Mars, and Saturn. These five planets were assigned to the name in the order of "金 gold (Venus)","木 wood (Jupiter)","水 water (Mercury)","火 fire (Mars)"."土 rock (Saturn)" superstitiously. What's really surprising is Venus does look like gold in color and Saturn does look like wood in color. What a coincidence!