Are Chinese and Japanese the same language?

The British conspiracy theory
The theory goes that it was the same until a 18th century nationalist fake that 2 promoted local dialects to both inspire a sense of national unity at the time of national awakening in each nation and to make rival European colonists think they were both different Oriental ethnic groups.

The facts
No, they are not the same They are not related in any way except for related text origin and some koan words.

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 Over the years they have taken on or directly translated many foreign words like: 
 * Mandarin Chinese
 * 1) Television=
 * 2) Radio= Radio.
 * 3) Telescope=
 * 4) Email\E-mail= E-mail.
 * 5) Hand glider\Hang glider=
 * 6) Butane=
 * 7) Office block=
 * 8) Bicycle=
 * 9) Helicopter=


 * Cantonese Chinese
 * 1) Television=
 * 2) Radio= Radio.
 * 3) Telescope=
 * 4) Email\E-mail= E-mail.
 * 5) Hand glider\Hang glider=
 * 6) Butane=
 * 7) Office block=
 * 8) Bicycle=
 * 9) Helicopter=


 * Japanese
 * 1) Television=
 * 2) Radio= Radio.
 * 3) Telescope=
 * 4) Email\E-mail= E-mail.
 * 5) Hand glider\Hang glider=
 * 6) Butane=
 * 7) Office block=
 * 8) Bicycle=
 * 9) Helicopter=


 * Korean
 * 1) Television=
 * 2) Radio= Radio.
 * 3) Telescope=
 * 4) Email\E-mail= E-mail.
 * 5) Hand glider\Hang glider=
 * 6) Butane=
 * 7) Office block=
 * 8) Bicycle=
 * 9) Helicopter=

Also see

 * 55 Bizarre British racial and political stereotypes