Although there hasn't been a contract signed yet, people like Qi Hao and Jiang Wen are as good as their word. A verbal agreement with them is as good as settled.
As for the schedule...
Jiang Wen clearly stated that he couldn't give Qi Hao a very important role. You can't play Zhang Mazi, you don't have the aura for Huang the Fourth, and you're not sleazy enough for Master Tang.
The three major roles are out of your reach.
Either the character doesn't suit you, or it's already been cast.
That's exactly why the cooperation is easier to arrange.
On the day Jiang Wen left, Shen City had heavy rain.
The rainy season has arrived.
When it's raining, they can only shoot indoor scenes or simply wrap up early.
Qi Hao lay on the bed, listening to the pattering rain outside.
His room was arranged to be connected with An Feng and Fan Xuexue's, with An Feng on one side and Fan Xuexue on the other.
The three of them are all popular idols, of similar status.
The arrangement makes sense.