The Troublesome Tower Energy

Arthur on the other hand was pretty busy dealing with something he never expected.

"How can I upgrade my pearl energy?"

He used to level up his dragonair energy and spiritual energy in two different ways till now. Yet he never upgraded the golden pearl.

Only Gege helped in its expansion once before, yet he never dealt with direct upgrades like this time.

'I believe you should recall what your golden energy is formed of,' the golden dragon said before adding, 'so your upgrade path should be either one of them or mixing the two together.'

"That's... hard," Arthur couldn't help but feel hesitant, "I could upgrade my spiritual energy easily, but the dragonair's ascension path is really tough."

'Ding! I assume you can start with your spiritual energy first,' the system said, 'Ding! Observe closely and try to come up with a theory to use later.'