张可沅 Keyuan Zhang
studied Electronic Systems Engineering at the University of Malaga, Spain. Over the past years, she has been researching efficient techniques for learning Chinese in private one-on-one tutoring. One of her recent focuses is the development of a comprehensive basic and advanced Chinese vocabulary covering most aspects of modern Chinese.
田弘杰 Bernd Sebastian Kamps, M.D.
is the author of several language manuals and medical textbooks (see https://hiv.net).