update info

Author: WangHanLinHenry

images/hongrucai.jpg

@@ -76,6 +76,12 @@ <h3><a class="text-link" href="https://www4.comp.polyu.edu.hk/~csjwang/" target=
         <div class="person-container">
             <h2>PhD Students</h2>
             <div class="person-grid-container">
+                <!-- Hongru Cai | LLM for Search -->
+                <div class="person-card">
+                    <img src="images/hongrucai.jpg" alt="Hongru Cai" class="person-image">
+                    <h3><a class="text-link" href="https://hongrucai.github.io/" target="_blank">Hongru Cai</a></h3>
+                    <p>LLM for Search<br><em>2026-</em></p>
+                </div>
                 <!-- Anhao Zhao | Efficiency of LLMs -->
                 <div class="person-card">
                     <img src="images/anhao.jpg" alt="Anhao Zhao" class="person-image">