Kim Jong Un decided to send Donald Trump a letter in his own handwriting to let him know he was still alive.
Trump opened the letter which appeared to contain a single-line coded message:

370HSSV - 0773H

Trump was baffled, so he emailed it to the his aides, who had no clue either, so they sent it to the FBI

No one could solve it at FBI, so it went to the CIA. With no clue as to its meaning, FBI finally asked MSS (Ministry of State Security) in China for help.

Within a few seconds MSS cabled back with this reply:

"Tell The President he's holding the message upside down."

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