Why is the masters shanghai arena so small?

I noticed that the masters shanghai arena is hella small compared to how big the arena looks on the outside? is there n reason for this? Why doesent valorant have bigger crowds?

couldnt sell all the tickets

Because valorante child game

im pretty sure they will upgrade to the mercedez benz arena for the final few games. that seats like 18k people

papa rito couldn't rent Mercedez Benz Arena for a whole tournament so it's only for the last 3 matches