RUSSIA " PASSENGERS WILL PLEASE REFRAIN " MOSCOW-BOUND TRAIN NO . 7 HAD JUST PULLED INTO NAUSHKI, THE SOVIET RAILROAD CHECKPOINT ON THE MONGOLIAN FRONTIER . SUDDENLY, SWARMS OF RED CHINESE STUDENTS DASHED OUT OF THE COACHES AND INTO THE STATION, TIED THEMSELVES WITH BELTS TO BLOCK THE ENTRANCES . THEN, IN THE WORDS OF ASTOUNDED STATIONMASTER PROKOP MIKHAILOV, THEY " EMPTIED THEIR BOWELS AND BLADDERS ON THE FLOOR, IN SPITOONS, AND ON BENCHES . AND THE MEN'S ROOM WAS ONLY A FEW STEPS AWAY . " CAUSE OF THE MESSY MELEE WAS THE DISCOVERY OF ANTI-MOSCOW PROPAGANDA IN THE COMPARTMENTS OF THE 19-MAN RED CHINESE TRAIN CREW AND THE 73 STUDENTS ABOARD THE MOSCOW-PEKING EXPRESS . WHEN FOUR RUSSIAN BORDER GUARDS AND CUSTOMS OFFICIALS TRIED TO CONFISCATE THE DOCUMENTS, MOBS OF RED CHINESE DEFIANTLY BLOCKED THE AISLES . ATTEMPTING TO FIGHT THEIR WAY THROUGH THE CROWD, THE HAPLESS SOVIET OFFICIALS WERE PUMMELED, SCRATCHED AND BITTEN ; FINALLY THEY WERE LOCKED INTO A COMPARTMENT FOR FIVE HOURS . WHEN THE RUSSIANS HASTILY ASSEMBLED A REPLACEMENT TRAIN FOR THE ONWARD JOURNEY TO MOSCOW, THE PEKING CREW LOCKED THE EMERGENCY BRAKES ON THEIR OWN EQUIPMENT, RAISED RED SIGNALS, AND MOVED CRANES TO BLOCKADE THE RAILS . IN THE END, THE HARRIED RUSSIANS WERE ABLE TO FORCE THE CHINESE TRAIN AND ITS RAMBUNCTIOUS PASSENGERS BACK OVER THE FRONTIER INTO MONGOLIA, AND WITH A SIGH OF RELIEF, SOVIET TRAINMEN CHUGGED OFF TOWARD MOSCOW IN THE REPLACEMENT TRAIN . IT MIGHT WELL BE THE LAST TRIP IN A LONG TIME FOR THE MOSCOW-PEKING EXPRESS . THE KREMLIN DASHED OFF A SCATHING OFFICIAL PROTEST TO PEKING OVER THE " PROVOCATIVE VIOLATION OF ELEMENTARY SANITARY AND HYGIENIC STANDARDS, " THEN PEREMPTORILY SUSPENDED SERVICE ON THE ROUTE UNTIL FURTHER NOTICE .