Does not belong. According to the query of public information, morula is a stage between cleavage embryo and blastocyst. Generally, the number of cells in the cleavage embryo reaches seven or eight, and there is no fusion between blastomeres. On the basis of eight cells, the blastomere continues to grow and divide. After the number of cells exceeds 32, it presents a semi-fused state, which is called a morula.