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 Tengchong is one of China's three major geothermal
areas, known as "Land Abounding in Geothermal Resources". There
are plenty of springs of hot water and hot vapour, called "Hot
Sea". There are quite a number of hot fields as well. Tengchong is
a resort where people can travel, take a bath and have medical
treatment. The Hot Sea, with an area of 9 square kilometers, lies
20 kilometers away southwest of the county seat and in the center
of the geothermal area. There are over 80 springs of hot water and
hot vapour, of which there are 14 spring whose temperature reaches
90ˇăC. The spring can be regarded as a rarity as far as their
 number and geothermal energy are concerned. The most magnificent
view is the boiling pool with a temperature of 97ˇăC, so it is
called "the Big Boiling Pot" by the local people. There are dozens
of big springs of vapour with a temperature of 94ˇăC at the mouths
of the springs, where you can steam food.
There are some bathrooms and steam beds for people
to take a steam bath or receive medical treatment. There are seven
big hot fields located in Ruidian Township in the northwest of the
county seat. The hot fields are 1,000 meters long from south to
north and 600 meters wide at the widest point. There are many
points where hot water wells out, of which
 there are several
dozens of big ones whose temperatures range between 40ˇăC and
95ˇăC. By the Naxinjie Road, there is a hot water pond of over
3,000 square kilometers, which is formed by water gushing from the
ground in great quantity. The hot fields are enveloped in mist,
especially in the morning in winter and spring.
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