[ You killed a steel-hide pig. You have been rewarded with 5 experience points. ]
...
[ Butcher has been upgraded to Tier 9 (0/2300). Physique +1, skill point +1, potential point +1. ]
[ Use 2 skill points to upgrade slaughter technique to Tier 6. Special weakness critical hit has been upgraded to blade critical hit. A critical hit effect will be triggered when killing creatures. Depending on the target of the attack, each strike can cause 2 to 4 times Critical Hit Damage. ]
[ You killed a steel-hide pig. You have been rewarded with 5 experience points.]
...
At four o 'clock in the afternoon, Ning Shi had killed 500 steel-hide pigs. His butcher profession had been upgraded to Tier 9 (300/2300), his physique had been enhanced to 18 points, and his slaughtering skill had been upgraded to Tier 6.
With his current strength, the speed of killing was already extremely fast, and there would definitely not be a problem of not being efficient.