Which goods were in scarce supply in Hongkong last year, and what you can't buy in Shanghai. Your bank account number. You need to commit all of these to memory.
Zure etxeko urrutizkin zenbakia, Mak jaunaren bulegokoa, ihazko urritasuna Hong Kongen, ezin garela Shanghaira sartu, zure banketxe kontu zenbakia.