I Cheated While Cultivating

This is a world where the ancient deities had died, and demons are born from the dark.
This is a world where martial arts are common, and they’re divided into nine-class, where the highest class leads to the world of immortals.
Zhou Heng transmigrated to this place and became an apprentice in a normal martial arts school. He practiced martial arts hard and at the same time, worked hard for a living.
One day, when he was practicing martial arts, he heard this voice.
“You’re practicing martial arts hard. Your level of proficiency has increased by 1.”
“You’re practicing martial arts hard. Your level of proficiency has increased by 3.”
“Congratulations! Since you have been martial arts nonstop, triggered ‘Heavenly Reward’. Your understanding toward martial arts has increased exponentially. Your level of proficiency has increased by 10.”
“Congratulations! You’ve reached perfection for the martial arts! You received a Lucky Bag.”
“You opened the Lucky Bag! You’re so lucky! You obtained Solo Nine Swords!”
“You opened the Lucky Bag! You’re so lucky! You obtained Celestial Globe Appraisal!”
“You opened the Lucky Bag! You’re so lucky! You obtained Gold Origin Medal!”