Created in 1933, "Boat Tracker" is an important masterpiece of Wu Zuoren's youth. At the time of the creation, Mr. Wu Zuoren was only 25 years old and was studying oil painting at the Royal Academy of Fine Arts in Brussels, Belgium. During this period, he sketched and created a large number of high-quality oil paintings, of which "The Slender Man" is the most famous and the largest one.