Im clearly a noob, so forgive the question. What does 2fierce mean?

Looking at chun li combo guide and it says j. Fierce-Fierce, 2Fierce, into Medium SBK. Thing is I can see no possible way to do 2 fierce on the ground and have it chain. Am I missing something? I get the Diagonal Jump Fierce-Fierce but I just can’t for the life of me understand that 2 fierce term.

2 fierce = crouching heavy punch. Directional annotations are often referred to by numbers corresponding to the number pad. I.E. 2 = Down, 3 = Down forward, 6= Forward.