Use pelican to generate static files, will all the md files in the directory be regenerated again?

suppose I wrote a 1.md file in the content folder and generated a html file under output using the make html command, and then wrote another 2.md file in the content directory. Does it execute both 1.md and 2.md again when using the make html command? Can it be set to execute only one?

Nov.05,2021
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-64f5-1b3c167-41328.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3c167-41328.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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