Everyone unknown ancient life Chinese (2)

Y myopic in ancient China?There is no computer TV in the antiquity of China, there is very little shortsighted. Are typically shortsighted researchers intellectuals studying diligently, because there is no electric light in ancient China, there is only lamp oil. People ancient Chinese treats the eyes by Chinese medicine, massage and acupuncture. Sunglasses have been introduced by the West in China during the Ming dynasty. Impair us our eyes without fear to rely on glasses now. For example crazy Net surfing and watching television.How China to convey information in antiquity?People transmit information by carrier pigeon and "wolf smoke" in  ancient China. Pigeon carrier and "wolf smoke" have been used in military activity in the first place.
What is called "wolf smoke", is that light blend of dried dung wolf, dry reed, dried cattle feces and hay. Such a desire to smoke rising directly into heaven, does the slope even blows. "Smoke Wolf" is a great invention in ancient China military defense system. Meanwhile, the carrier pigeon is a good tool to convey the love letter too. Carrier pigeon become the "head of the twinning" of many enthusiasts. The ancient people link the letter on the leg of the carrier pigeon with red silk thread to draw the attention of the recipient. Nowadays, we use e-mail, telephone, audiovisual well what is the most convenient and fastest, but lack a little romantic and wait.Ancient Chinese smoke?Tobacco was introduced from Philippine in China during the Ming dynasty initially.
 There was a small amount of planting in Fujian and Guangdong province initially. But there are really few people smoking. As everyone knows, the harm of tobacco is huge for people, especially for opium. Small opium, become the fuse blasting that rewrites the history of China. British businessman put opium in China, Qing dynasty sent free initially began selling in large quantities once people get into the habit. Traced to the murder of many Chinese.