上周字谜的答案是：回。 你答对了吗？
本周字谜的答案是，······ 你要不要再想想？72 小时是几天呢？三天，对了。那三天又可以是什么呢？三日，对了。三个日在一起是什么字呢？对了，是：
晶
恭喜恭喜！
As a professional Mandarin instructor with almost two decades worth of teaching experience in American schools, I came to recognize how language-learning in a school setting is only one step in the long journey of acquiring a foreign language. I felt a need and urge to bring my profession beyond school, and I believe professional teaching should be accessible to anyone at any point in their life. It is with this belief that I founded MAD Mandarin LLC in 2018 with the goal to incorporate the latest teaching methods with my own innovative approach of Mindful-Active-Dynamic to positively achieve the best language-learning results.