Initially, Lu Shu was troubled as to why he was considered to have tier F aptitude. But it was all working out for him now as it provided him with an 'umbrella' to shield himself from the suspicions.
Having tier F aptitude was the most common amongst the metahumans just as Xi Fei had mentioned. That meant that the majority of them would require half a month of training in order to complete one cycle and 4 entire months to complete the mysterious matter cycle training regime.
That was considered to be the normal speed while those who had tiers B or A aptitude belonged to the category of gifted geniuses. If those with tier B aptitude were regarded as geniuses, that would mean that those with tier A aptitude were to be regarded as extremely gifted geniuses.
