Before Erza taught Mikasa any martial arts skills, she told her to train her stamina and strength. Mikasa ran around the whole forest with Erza following after her, being a level two cultivator made it easier for Mikasa to last three continuous laps around the entire forest, a normal person would have collapsed after running only 1 lap. After Mikasa completed her laps, Erza gave her no rest only a bottle of water and told her to punch fifty trees until they are completely diminished.
At the end of the training, only being at level two, she had the power of a level five cultivator.
With Erza's brutal and painful training, only the people with strong will and determination that passes others can be a disciple of Queen Titania Erza Dragneel. She can turn the worlds weakest into the worlds strongest. She can turn, the untalented into the talented. She can break and make a prodigy. This is only a small bit of Erza's talent and power.
Erza than told Mikasa to cultivate for ten minutes to help Mikasa recover. After Mikasa finished she stood up and walked toward Erza signalling that she was finished. "The first martial art technique I am going to teach you is only a basic one used in the military, it is called Shippalgi." Mikasa nodded and waited for Erza to explain more about this technique.
"Shippalgi is split into three categories: thrust, strike and slice. This technique focuses more on practical fighting, once you are able to master it, you can combine this technique with your spiritual energy, increasing its power by ten folds."
Mikasa became excited and wanted to learn this technique and she knew that this training will only get worse. Even though she is only ten years old, she remembered what Erza told her whilst helping her mum settle in at the in.
'In the martial world, there is only one rule, the survival of the fittest'.
"The second technique I want you to learn in Din Mak. This is known as pressure-point fighting. This technique focuses on attacking the susceptible to the opponent's body through various acupuncture points. Some have been known to knock out or even kill adversaries using this martial art but its underestimation and misunderstanding is its most dangerous appeal. For a ten years old girl to be using this technique can make stupid opponents not think at all but a smart person would overthink it." Erza thoroughly explained.
Mikasa was astonished by her master's knowledge and even more excited to learn two martial art techniques in one day.
"I don't expect you to learn it to full master it in just a few hours so I have arranged that you will practice the two martial art techniques four hours a day and cultivate when you wake up in the morning for an hour and cultivate for another hour before you sleep, understood!" Erza instructed. "Yes, master!" Mikasa passionately shouted as she did a slight bow.
Erza taught Mikasa for an hour and told Mikasa to practice the same move for four hours and did the same with the second technique.
Mikasa had the power of a level seven cultivator but was still level two. Imagine how powerful she would be at level three.