A kid interacts with an installation at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Fang Xin)

Visitors select merchandise at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Fang Xin)

A kid visits the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Ren Chao)

A visitor takes pictures of exhibits at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Yan Linyun)

A man visits the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Yan Linyun)

A kid interacts with an installation at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Ren Chao)

A kid interacts with installations at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Yan Linyun)

A staff member (L) explains exhibits to a kid at the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Ren Chao)

Children visit the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Yan Linyun)

People visit the exhibition centered on the "Nantianmen Project" in Beijing, capital of China, July 9, 2026. The exhibition opened to public here on Wednesday. The "Nantianmen Project" is China's homegrown sci-fi aerospace intellectual property. (Xinhua/Yan Linyun)