RC396487695CN and RC226463006CN and China Post Air Mail Website said NULL, Can anybody help me? thanks.

The first parcel has the status as "2014-01-25 00:00, EL ENVIO FUE DESPACHADO EL 25/01/2014 DEL CCPL A LA OFICINA POSTAL PUEBLO LIBRE, EL ENVIO LLEGO AL PERU PROVENIENTE DE CHINA REP. POPULAR", so I think you will get it soon.
The second one was delivered to the Beijing airport on Jan 14 and no update since then. It may be on the way to its destination country.