ps: Ask for leave, make up for it on the 26th, and update the four chapters on the 27th. Pen, fun, and www.biquge.info

licensethemitlicense(mit)copyright(c)permissionisherebygranted，freeofcharge，toanypersonobtainingacopyofthissoftwareandassociateddocumentationfiles(the“software“)， todealinthesoftwarewithoutrestriction，includingwithoutlimitationtherightstouse，copy，modify，merge，publish，distribute，/orsellcopiesofthesoftware， andtopermitpersonstowhomthesoftwareisfurnishedtodoso，subjecttothefollowingconditions: theabovecopyrightnoticeandthispermissionnoticeshallbeincludedinallcopiesorsubstantialportionsofthesoftware.

thesoftwareisprovided“asis“，withoutwarrantyofanykind，expressorimplied，includingbutnotlimitedtothewarrantiesofmerchantability， fitnessforaparticularpurposeandnonieauthorsorcopyrightholdersbeliableforanyclaim，damagesorotherliability，whetherinanactionofcontract，tortorotherwise，arisingfrom， outoforinconnectionwiththesoftwareortheuseorotherdealingsinthemitlicense(mit)copyright(c)permissionisherebygranted，freeofcharge， toanypersonobtainingacopyofthissoftwareandassociateddocumentationfiles(the“software“)，todealinthesoftwarewithoutrestriction，includingwithoutlimitationtherightstouse， copy，modify，merge，publish，distribute，sublicense，and/orsellcopiesofthesoftware，andtopermitpersonstowhomthesoftwareisfurnishedtodoso，subjecttothefollowingconditions: theabovecopyrightnoticeandthispermissionnoticeshallbeincludedinallcopiesorsubstantialportionsof，and/orsellcopiesofthesoftware， andtopermitpersonstowhomthesoftwareisfurnishedtodoso，subjecttothefollowingconditions: theabovecopyrightnoticeandthispermissionnoticeshallbeincludedinallcopiesorsubstantialportionsofthesoftware.

thesoftwareisprovided“asis“，withoutwarrantyofanykind，expressorimplied，includingbutnotlimitedtothewarrantiesofmerchantability， fitnessforaparticularpurposeandnonieauthorsorcopyrightholdersbeliableforanyclaim，damagesorotherliability，whetherinanactionofcontract，tortorotherwise，arisingfrom， outoforinconnectionwiththesoftwareortheuseorotherdealingsinthesoftware.

thesoftwareisprovided“asis“，withoutwarrantyofanykind，expressorimplied，includingbutnotlimitedtothewarrantiesofmerchantability， fitnessforaparticularpurposeandnonieauthorsorcopyrightholdersbeliableforanyclaim，damagesorotherliability，whetherinanactionofcontract，tortorotherwise，arisingfrom， outoforinconnectionwiththesoftwareortheuseorotherdealingsinthesoftware. (To be continued.) )