How to reduce the slow loading of IOS XCODE simulator

for example: I have just built a forHello project, and when I click to run the simulator, the previous projects are also displayed (as shown in the figure: BackGround,ChineseZodiac,layoutContrains, etc.), and then the simulator enters my forHello project.
every time I start the simulator, it is very slow. Is there any way to just open the project I am running when the simulator starts? That is, in the picture, there are no other icons?

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

Xcode iOS-developing

Jun.23,2021

the simulator is a little slow to open, and has nothing to do with other applications. Don't turn off the simulator every time you recompile and debug. It's very fast.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1be56a6-30fcc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be56a6-30fcc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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