> My system will never have to deal with names from China

I work in a small French town where Chinese people were quite rare until a few years ago. Their passports have a translation of their names in Latin alphabet, same for Russians.

However one day one of my user told me "hey I can't find some customers in your app, but I'm 100% sure I recorded them previously. Funnily they're all Chinese".

It turns out that to avoid querying the database too much I was starting to look for customers name once the user had entered at least 3 chars. Most of the Chinese names were only 2 chars like "Xi", "Wu" etc.

I clearly remember thinking at the time of writing the original code that nobody had only a 2 letter name :)