Why did you tell the other graduate to apply for 7-11 and McDonald's part time jobs and this graduate not to aim for anything lower?! Weird.

Of course you should tell all employers you're a graduate from one of the top universities in France, especially for non-French companies who, in most cases, might not be aware of.

You've only spent a year learning Mandarin and already at conversational level, it's not an easy feat and with time and practice, you will continue to improve.

Don't aim for any job "lower" than you should especially for a young and fresh graduate like you. Employers only want those they see potentials who at the same time are dedicated and hardworking. I wouldn't use the word "lower" but rather "flexible" when it comes to salary expectation, this certainly will help, as what you need now is an opportunity to gain experience. Once you've accumulated enough, you're ready to move on should employers don't treat you kind and fair.

Instead of asking me for my suggestion, looking at it the other way round, you should think of your uniqueness, your strengths and your interests. Also, what companies would find your qualities and background relevant, useful and applicable? You'll be able to work out your answer, right?

Good Luck!

If it's just starting of your career and you don't mind the position. Suggest you to work for some big or multinational company which you can gain many operation activities.