Why is the "Type 92" heavy machine gun also called "Pheasant Neck"?

Japanese Type 92 heavy machine gun was manufactured in the seventh year of Hirohito (AD 1932). On the basis of three years of heavy machine guns, the caliber of 6.5 mm was changed to 7.7 mm, the "frame handle" was changed to "splayed handle", and a fire cap was added to the muzzle. Because the calendar year of SHEN WOO is 2592, it is designated as "Type 92" according to its calendar year. This kind of heavy machine gun has a nice name, which is "Kiss of French Girl". There is also a very ugly name, called "chicken neck", which is taken from the spiral heat sink that accounts for almost 60% of the gun body and looks like a chicken neck. In addition, when shooting, 30 rounds of ammunition boards were replaced by regular "cough, cough" sounds, which China soldiers and civilians joked.