This puzzle was inspired by an exchange on one of the cruciverb.com forums, as reconstructed in the next paragraph.
On May 11, 2013, Martin Ashwood-Smith asked for a 10-letter word ending in CHEN. The next day, Jim Peredo wrote, "Isn't it obvious? MR_JEFF_CHEN." A few hours later, Chen himself replied, "The correct title is GALACTIC PRIME EMPEROR JEFF CHEN, thank you very much. I decree that fits into a 15x." This inspired Alex to construct the puzzle, which was shared with its subject on May 27. Jeff wondered what was going on, but eventually had a good laugh about it.
If you want to tell others about this particular page, refer them to http://tinyurl.com/yourulemidrash