When you are very good or proficient in whatever you do, we may call you possess the skill or power almost god like or shen gong.
We may call you "god" of the long spear etc. god of gambling (du shen), god of medicine (yi shen) etc etc
if you are good at tai chi, you possess tai chi shen gong.
if you are good at archery, we may call you god of archery (jian shen).
so what is the specialy of you and your style?
sometimes. shen gong is only a goal or even fantasy. anyway. whoever possesses the best or most proficient skill, we still call him god of so and so, meaning he is the best in the field but not necesarily reaching the ideal goal or criteria.