William Lü first began his training at Chapman University under the direction of
Cyrus Parker-Jeannette. Throughout his training, he has worked with renowned choreographers, such as David Parsons, Doug Varone, Robert Battle, Tiffany Billings, Cyrus Parker Jeannette, Sean Greene, Nancy Dickson-Lewis, Jenny Backhaus and Amy Bates. Upon his graduation from Chapman University, he received the Fannie Kalis Award, a prestigious award given to the graduating seniors, for his contribution in dance.

Lü has served as a guest teacher and featured artist for the Golden State Ballet Summer Intensive, McCallum Theater, California Dance Educators Conference, Teen Dance Company of San Jose, Torrance Cultural Arts Center, Northern California Dance Conservatory, Mt. San Antonio College and numerous regional dance schools and colleges. In 2002, he received national recognition for his choreographic work Mon Prison Ma Chambre, for which he received the Engman Award at Palm Desert's notable Dance Under the Stars Choreography Festival. His works have been presented at prominent venues, such as the Dorothy Chandler Pavilion and McCallum Theatre.

Lü was a member of Backhausdance for 6 years. He recently joined Helios Dance Theater. His credits include a lead in Yo-yo Ma's music video and Tiffany Billings’ Blind Faith. William has also performed as a guest artist with the Orange County Regional Ballet, and the Redlands Ballet Festival Company. He was named as one of "Best Male Dancers” by the Beverly Hills Outlook in 2004 and 2007. Orange County Register raved him as “a risk taker” and “a class of his own.” And recently, he was awarded his second Lester Horton Award for his performance in Jennifer Backhaus’ Push.