Is it possible to grow small vegetables in the open air at the present temperature?

The planting time of small vegetables can be chosen around September every autumn. Small vegetables belong to shade-loving plants and are afraid of heat. It's spring now, and the temperature is rising gradually. The weather is getting hotter every day, which is not suitable for the growth of small vegetables. Therefore, small vegetables cannot be planted in the open air at the current temperature.

Chinese cabbage has small seeds and poor soil covering ability. In the case of applying sufficient organic fertilizer, first level the whole land, mainly some big stones and bricks, to prevent the seeds from falling off their roots and affecting germination and rooting.