First sentence: "The Unlikely Hero: Xia Qingzi’s Daring Rescue". Proper nouns here are "The Unlikely Hero" (probably a title, but the user might consider "Xia Qingzi" as the proper noun). Wait, the instruction says "proper nouns stay". So "Xia Qingzi" should remain as is. The title parts like "The Unlikely Hero" and "Daring Rescue" aren't proper nouns unless they're titles. Maybe they don't need to be changed. But the user hasn't specified titles, only proper nouns. So maybe just "Xia Qingzi" is the proper noun here.
"Using" could be "Employing|Utilizing|Applying". Xia Qingzi - The Rescue of a Top Masseuse - Mad...
"The incident, which has left many in awe, showcases Xia Qingzi’s heroic side and has sparked widespread admiration." First sentence: "The Unlikely Hero: Xia Qingzi’s Daring