Apartments are being constructed in every city at a greater rate than seen in 2008. A photo of two I took while strolling on the river:

They are typical slab construction. Many of the rural buildings I have seen have NO re-bar. I have watched locally fired bricks being made and fired. These bricks are mortared together to construct walls as high as three stories. Some sites I have been to in the cities have re-bar (these do) but I can only imagine what an earthquake in the north would do. Some of the old buildings are awful. Think about the Szechuan earthquake in 2008. Here there is no heavy equipment to speak of. A few cranes are seen here and there but the devastation would be severe.