Riddle: A slow, flat stream coming into the river

The name of the place is: Xuzhou; if a word is: Zhou

There are many different ways to guess the riddle, and there are more than 20 common ones. Belonging to the will of the body of the will of the method, the reflex method, borrowing buckle method, side buckle method, sub-buckle hair, traceability method; belonging to the loss of the body of the addition, subtraction, addition and subtraction; belonging to the body of the separation from the bottom of the method, away from the face of the method; belonging to the body of the hieroglyphic hieroglyphic method, the hieroglyphic method, the method of painting; belonging to the body of the harmonic method, the method of the harmonized method, belonging to the body of the synthesis of the comparative method, anthropomorphic, anthropomorphic, the method of the question and answer method, the method of the transport of the canon.