Yu-Ling Cheng, a professor of Applied Science and Engineering at the University of Toronto and the director of Centre for Global Engineering, visited LEDeG on May 18, 2018. Cheng, who received grant from the Bill and Melinda Gates Foundation under Reinvent the Toilet Challenge project in 2011, is working on a prototype that requires no sewage system, no water and no electricity. The prototype can process human waste in 24 hours and costs not more than four rupees per user per day.

Cheng, who is currently working on the latest prototype and is looking for a place to test P5, termed Leh as the perfect place to test the prototype. Impressed with the work being done by LEDeG, Cheng hoped for a long-term partnership with the organization wherein graduate and undergraduate students from University of Toronto would work with the Leh-based NGO.