A Japanese doesn't need visa to enter China if one's stay in China would be within 15 days, regardless of one's purpose such as sightseeing, business, meeting or conference.
I will fly in Beijing Capital Airport on Nov. 4th and leave on Nov. 9th.
Because Sendai is near Ichinoseki, my city, it's easy for me to use Sendai Airport but flights between Beijing and Sendai can not be booked yet and its fee is not yet fixed.
The other day I booked flights above between Tokyo/Narita and Beijing.
They are cheaper than Sendai-Beijing flights. But from Ichinoseki I have to travel maybe by Shinkansen to Tokyo and maybe by express train to Narita Airport to board the flight.
Narita Airport is not in Tokyo but in Chiba.
Tokyo Disney Land is not in Tokyo but in Chiba.
BTW do I have my passport?
Yes I do. I used it 4 years ago when I went to Berlin, OOoCon 2004 site.