free Mandarin for exchange (Beijing)

Hi guys! I'm a local Beijinger who speaks English, French, German and Mandarin(of course). I've experience in Chinese teaching as foreign language (That was my major in university). If there's anyone wants to learn and improve Mandarin, please connect me. And for those native German(preferred) or French speakers who wants to learn Mandarin, I'd like to teach for free if you'd like to exchange freely, since I still wanna my German or French reach to a higher level. Cheers!