Introduction to Minecraft execution subcommands
Execution subcommands

Only include the run subcommand, which must be followed by the command to be executed.
Format: run <command>
Parameters: <command>: A complete command, which cannot start with a slash
Result: Execute this command, and the specified command will succeed if it succeeds, and fail if it fails
Explanation:
We have seen many examples of the run subcommand before, and here we emphasize a few things:
The execute command can also be executed after the run subcommand, but this does not make any sense. Nesting the execute command in the execute command is equivalent to combining the subcommands directly
The run subcommand will reset the root node of the command dispatcher when it is executed
Unless the execute command is used again after the run subcommand, no execute subcommand can be used again, which means that an execute command can only execute one command