This may not be wrong.
Ever heard of hollow pot floor system?
In very tall concrete buildings, the aim is usually to reduce the overall weight of the structure and save on the sizes of columns and footings.
However, in this taiwanese slab, that slab seems too deep already for any saving in weight. Solid floors of depth 200mm (20cm) are more than enough.
A Kasarani building that failed sometime back had also used this hollowpot technique, an so, that is why we kawaida Kenyans mostly use the well know, tried and trusted solid slab systems.
Receive with simplicity everything that happens to you.” ― Rashi