With the development of high-speed rail, the aviation field has been facing more and more challenges. However, based on China’s vast territory, astonishing population base and the people’s continuously enriched wallets, planes will still be one of the common ways of traveling for ordinary people in the foreseeable decades. There are always some friends around, Because of the need to become a trapeze artist, Every time I struggle with flying, either the air traffic control delays the flight or I go abroad to take economy class for more than ten hours, which is extremely painful. However, more and more people complain to me that when flying up or down, they always feel uncomfortable in their ears, feel earplugs, and have Read More …