1. I needed to perform a batch replacement in the code according to the following rules, as shown in Figure 1.

Plaintext
src="<?= $webAlias ?>/statics/images/article_list/close_2.png"
Replace with:
src="<?= CdnHelper::url('statics/images/article_list/close_2.png')
src="<?= Yii::getAlias('@web/statics/images/header/bottom.png') ?>"
Replace with:
src="<?= CdnHelper::url('statics/images/header/bottom.png')2. The replacement results met expectations.
Plaintext
src="<?= Yii::getAlias('@web/statics/images/case_detail/left.png') ?>"
src="<?= CdnHelper::url('statics/images/case_detail/left.png') ?>"
src="\<\?= ?Yii::getAlias\('@web/([^']+)'\) ?\?>"
src="<?= CdnHelper::url('$1') ?>"