What are the cold history of Chinese knowledge? 有哪些中国历史冷知识？

相信这幅《时局图》，大家都在历史课本里读过。晚清时期，列强环视，国家风雨飘摇。这幅图形象地传达了当时中国的状况。
不过，可能有很少人注意到《时局图》的作者，也是中国历史上首位飞艇设计师。他的名叫谢缵泰。
1899年，中国人设计出了自己的第一艘飞艇。
设计师是出生于悉尼的华侨谢缵泰，他把它命名为“中国号”，以表达自己的爱国热情。

I believe this piece of "current situation map", we all read in the history textbook. In the late Qing Dynasty, the powers looked around and the country was precarious. This picture vividly conveyed the current situation in China.
However, very few people may have noticed the author of "Current Affairs Map" and the first airship designer in Chinese history. His name is Xie Tai Thai.
In 1899, the Chinese designed their first airship.
The designer was born in Sydney, Chinese overseas Xie Xie Tai, he named it "China" to express his patriotic enthusiasm.

这艘飞艇在当时的中国可以说是前所未有的，机身以铝材料为主，靠电动机带动螺旋桨旋转前进，还有3个计时控制的强力甲板推进器，采用自动伸缩钢翼来减少阻力。
引人注目的是侧身上标注着“CHINA”，尾部还悬挂着一面旗帜——大清黄龙旗。
设计成功后，谢缵泰满怀热情地将图纸呈献给清政府，祈愿大规模批量制造，建立第一支中国空军，可惜清廷毫无反馈。
没有政府的支持，飞艇的制造就化为泡影，谢缵泰颇为沮丧。
无奈之下，他向英国友人求助，将设计图与方案寄往英国。
1910年，按照他当时的方案设计出的飞艇，在当年的伦敦博览会上展出，只是它的名字不再是“中国号”。
也就是在这一年的年初，谢缵泰终于凭借自己的力量制成一艘长4米，宽1.7米，上悬一个大气球的飞艇，并试飞成功，使中国成为最早拥有飞艇的国家之一。
实现这个飞天梦，谢缵泰用了十年。

The airship in China at the time can be said to be unprecedented, the main body of aluminum material, driven by the motor propeller rotation forward, there are three timing control of the powerful deck thrusters, the use of automatic retractable steel wings to reduce resistance.
Notable is the side marked "CHINA", the tail also hung a banner - the big yellow flag Qinglong.
After the success of the design, Xie Yutai enthusiastically presented the drawings to the Qing government and pledged to mass-manufacture the first Chinese air force. However, there was no feedback from the Qing court.
Without the support of the government, the manufacture of the airship turned into a bubble, and Xie Taotai was frustrated.
In desperation, he sought help from British friends, the design plans and programs sent to the United Kingdom.
In 1910, the airship designed according to his current plan was exhibited at the London Expo that year, except that it was no longer named "China".
That is, at the beginning of the year, Xie Taitai finally made a 4-meter, 1.7-meter-airspace airship over a large balloon with his own strength and succeeded in the test flight, making China one of the earliest countries to own airships.
To achieve this dream, Xie Tantai spent ten years.