transit visa for filipino citizens

me and my family are going to costa rica for a vacation this coming may. and i am looking for possible routes. i've seen that beijing, china (manila - hong kong - beijing, china - germany and from germany to costa rica) is one of our options. but we don't need tourist visas for costa rica. the only thing that we would be needing is our passport and tickets. so, do still have to get a transit visa for china? considering that we're only going to stay in the airport for 3 hours?