Thinking about uploading some unique "design", there is really a conceptual design two years ago-stratospheric solar airship, which is mainly used for space communication and navigation services (supporting various military and civilian missions in the fields of communication, monitoring, observation and navigation). The flying height is about 20 kilometers, the length is 70 to 100 meters, the diameter is 20 to 30 meters, and the advanced HIT solar energy technology is used, collecting sunlight is more efficient and can store energy.