Congratulations on finding this challenge! Now, Thaothao, prepare to have your mettle tested, wits challenged, and knowledge questioned!
Each screen will present you with a challenge or riddle:
Challenge - Once you complete the challenge, I shall award you with the password to the next step
Riddle - The answer to the riddle is the password to the next step
How to use this password to proceed, you wonder? Well, quite simply, you merely need to update the url. For example, let's say the password is "software engineer". Then, you will simply edit the url, specifically the portion that says "start_challenge" on this page, so that it reads "https://maxandthao.com/software_engineer.htm" instead, and you will move on! :)