The middle panels of this tomb painting show the deceased and his wife engaged in various activities. what kind of activities are they?

You have not provided specific information about the tomb (name, location, historical period), but I believe you are referring to a tomb from Ancient Egypt, most probably the famous Tomb of Sennedjem and his family (three generations) in Deir el-Medina, since in the central or middle panels of his tomb he and his wife Iyneferti are represented symbolically working in the fields. In the upper register they are shown cutting and collecting ears of corn, and in the lower register they are depicted harvesting flax (which would later be used to make linen cloth), plowing with the assistance of two cows and sowing.  

china has confucianism thats everywhere in asia but it isn't really a religion.  

the answer is aristophanes comedies.