The "Hidden" Mom

""A lot of invisible ""little monsters"" are coming! Niu Niu learned from her mother's explanation that if she was targeted by the ""little monsters"", she would get sick. One day, her mother suddenly hid in the room and told Niu Niu that she must wear a mask and play ""hide and seek"" with Niu Niu. Why did mom suddenly hide? When can Niu Niu see her mother? Later, mom asked a lady from the community to help take care of Niu Niu. Niu Niu, who was originally scared, immediately cheered up with the encouragement of the aunt.The plan for Niu Niu and Aunt to rescue Mom is just about to start!""