Ding Zhilin 
Letter from a Mysterious Island 

One day, Dr. Gudu found many strange cyanobacteria in a bottle of seawater sample sent by his assistant Lanya. After careful observation, these cyanobacteria actually formed a string of mysterious symbols. When Gudu finally cracked the secret of the symbols, he discovered that these symbols had become a letter for help, and the sender was an island he had never heard of before! Gudu and Lanya embarked on a journey to find the island according to the clues in the letter. At the same time, Squeak, Gudu’s nemesis, has received the news and plans to go to the mysterious island. Can Gudu and Lanya find that mysterious island? Can they complete the mission of saving the island?