1. According to official website, the Voice of Science, Hubble Astronomical Telescope is an optical telescope in space. It was successfully launched on April 24th, 1990 in the name of American astronomer Edwin Hubble.

2. The official website in the kitchen says that your fish is eviscerated, cleaned and dried.

3. Put salt on the surface, pour a layer of soy sauce, put shredded ginger in the stomach and put shredded ginger on the surface.

4. Boil the water, add the mandarin fish and steam for ten minutes.