I have been puzzled by this recently.
Chapter 34, ROCH:
杨过听到一灯的声音,也是十分喜欢,他知一灯所使的是上乘内功“千里传音”之法。杨过只听了他这两句话,心 下大为钦服,自叹这位高僧功力浑厚,自己颇有不及
Yang Guo was mighty pleased to hear Yideng's voice. He knew that Yideng had used the highly regarded "Thousand Mile Roar" inner method. Having heard two sentences by Yideng, Yang Guo was extremely impressed; he further sighed at the fact that this monk possessed more robust/vigorous internal power than his own, and he knew that he was not a match yet.
So, Yang Guo considered some aspect of his internal foundation to be inferior to that of Yideng.
BUT LATER IN THE SAME CHAPTER:
杨过纵声长啸,过了一顿饭时分,非但没丝毫衰竭之象,反而气功愈来愈壮。一灯听得也不禁暗自佩服,虽觉他啸 声过于霸道,使的不是纯阳正气,但自己当日盛年之时,却也无这等充沛的内力,此时年老力衰,自 更不如
Yang Guo continued to roared for a long time. His roar did not become weaker over time, but rather seemed like it was getting stronger. Despite Yang Guo's unorthodoxly powered roar being overly aggressive, Yideng could not help but admire the fact that even in his prime days, he never possessed this type of abundant energy as Yang Guo did. Now an old man, he would be even more inferior than before.
Two points of interest here.
1) Yideng clearly thinks that his internal foundation is inferior to Yang Guo in some aspect. Does this contradict what Yang Guo thought about Yideng's inner strength being superior?
2) More importantly, Yideng considered his energy level now to be INFERIOR to before. Does this mean he has LESS internal energy now than 16 years ago?
DISCUSS.