But the mosquitoes that kept buzzing made Bell very annoyed.
It did not seem to be easy to fall asleep.
Bell began to chat with everyone.
"The Amazon rainforest can be said to be one of the most dangerous wilderness spots in the world.
Over the centuries, many people have tried to explore this mysterious rainforest.
The reason is a legend of a treasure.
The Golden City, El Dorado.
Rumor has it that this city is hidden in this dangerous rainforest.
But so far, no one has discovered it.
According to the analysis of historians, the total value of the treasures in El Dorado should be between 3 to 5 billion USD.
In the 18th century, a large exploration team of 700 people had entered the Amazon rainforest in an attempt to find this treasure.
However, the outcome was not satisfactory.
In the end, nearly half of the 700 people were buried in this rainforest.
