He arrived in the United States at the age of three, growing up in California. He received an A.B. in physics from the University of California, Berkeley, and a Ph.D. in biology from the California Institute of Technology.
Lu later became a best-selling author with Macintosh books. Possibly one of his most well-known works is The Apple Macintosh Book, which pretty much accompanied the Macintosh 128K with its first edition in 1984. The second edition covered the Macintosh 512K, while the third edition covered six Macintosh models. The fourth edition of the book (published in 1992) covered 21 models (including discontinued models, such as the Macintosh 128K), and even included mentions of the Macintosh Classic series, the Macintosh Quadra series, the PowerBooks, and System 7.