The image is a photograph of a wooden sign with Chinese text on it. The sign is rectangular in shape and appears to be made of light-colored wood. The text on the sign is written in both English and Chinese characters. Below the text, there is an illustration of a hand pointing upwards with a light detection symbol above it. 

The text below the illustration reads "For plants with an extreme need for sunlight, how do their seeds know when they have found an environment suitable for growth?" This suggests that the sign may be used to inform people about the importance of light detection in the environment.