Yes, yes, the Chinese love to...watcha call it...扎堆? Just do a search on 瑞士论坛, and you will find aplenty. If your aim is to meet Chinese in Switzerland, you also ought to check out appropriate groups on QQ, 豆瓣, Facebook and its Chinese knock-off, 人人网. You will be surprised (or at least I was) to find that there are actually quite a few of them in this country, most of them students at ETH/EPFL or one of those expensive private hotel management schools in the Romandie, whose existence I wasn't even aware of before acquiring an interest in the domestic Chinese community. And if you are as curious as I am, you'll also want to google 德国论坛, and be amazed at the number of hits - there are even forums for specific cities! Should you decide to dig even deeper, you will discover that Germany is actually one of the top destinations for Chinese students aspiring to study abroad - second only to talent-magnets such as US or UK. Who would have thought that?
Two years ago, I attended a few undergrad Chemistry lectures at the ETH. Out of the whole class of probably around 200 there were about five that were Chinese. That's a rather small number, and I would have never noticed them, had it not been for the fact that they all congregated in the front row - which was shunned by everyone else. Now, there's another option for you to meet some Chinese
Best regards
zgcrjy