From the Hong 曾 Family's American Diaspora Files†:
On September 11, 2001, Zack ZENG Zhe 曾喆 was working at the Bank of New York at One Wall Street near the World Trade Center. When his building was evacuated, Zack could have gone home like the rest of his colleagues. Instead the 29-year-old gathered all the first aid and medical supplies he could find and told his friends and colleagues he was heading to the disaster scene to assist.
While attended the University of Rochester college Zack had worked as EMT with the Brighton Volunteer Ambulance. So, on 9/11, Zack was doing what he was trained to do.
On his way to the disaster, Zack called his mother to tell her he was alright and that he had to help someone. Later Zack's classmates would report seeing him on Fox TV, wearing white gloves, squatting on the ground to help the wounded.
He died when the twin towers collapsed.
An Immigrant's Story
Zack immigrated to the United States in 1988 with his parents and older brother from Guangzhou, China. Zack picked up English quickly. He majored in Financial Business Management at the University of Rochester, and eventually earned an MBA before joining the Bank of New York in 1998.
An ambulance in Brighton, NY, is named in his honor as well as a block of Bayard Street near Mulberry Street in New York City Chinatown.
McDermott, Meaghan M. “Brighton Ambulance to Honor 9/11 Victim.” Rochester Democrat and Chronicle, Gannett, 25 May 2016, https://www.democratandchronicle.com/story/news/2016/05/25/brighton-ambulance-honor-911-victim/84925982/.
“The 20th Anniversary of September 11th, the Mother of Chinese Hero Zeng Zhe: Let Go of the Pain and Continue to Live.” Sohu.com, 11 Sept. 2021, https://m.sohu.com/a/489240723_123753/. Translated to English using Google Translate.