build.gradle中的comileSdkVersion为何重复定义？

// Top-level build file where you can add configuration options common to all sub-projects/modules.
apply plugin: 'com.huawei.ohos.app'

ohos {
    compileSdkVersion 5
    defaultConfig {
        compatibleSdkVersion 4
    }
}
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apply plugin: 'com.huawei.ohos.hap'
ohos {
    compileSdkVersion 4
    defaultConfig {
        compatibleSdkVersion 4
    }
    
}
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