Stay healthy when traveling

While China covers a vast geographic area, with various mountains and rivers, these grand landscapes are not suitable for all people. High altitudes, cold sea water and pollen can prevent certain groups of people to visiting these areas. People with acute otitis media (inflammation of the middle ear), coronary heart disease, angina and seriously high or low blood pressure as well as pregnant women are advised to stay away from high mountains, because high altitude sickness could pose a serious physical challenge to these people. Those with rheumatism, diabetes, chest pains and overactive thyroid glands are strongly advised to stay away from seaside. In autumn, the seaside temperature is lower than land temperature on average. This an the combination of high humidity and abundant sodium ions in the air will aggravate the health of these people and lead to contraction of the alleged "seaside exposure syndrome".