When Uchiha Madara saw how fiercely Goku and Liu Sanqing were fighting, he roughly understood the nature of Goku's suspicions. Ordinary Earthlings could never possess strength like Liu Sanqing's. Earth's people excelled in intellect; their inventions and creations ranked among the best in the universe. But their individual physical qualities and abilities—especially their combat abilities—were absolutely no match for those of people from other planets in space.
Not to mention that Saiyans were already one of the most battle-capable races in the universe, and Super Saiyan 4 was the strongest among them, an existence that was virtually invincible throughout the cosmos. Yet even someone of that caliber faced considerable pressure against Liu Sanqing and had come close to defeat several times. That could only mean that Liu Sanqing was absolutely not an Earthling.
Then where had she come from, and what was her identity? For the protection of Earth, those questions were especially important. Uchiha Madara specifically used Sharingan Divine Eye on her once, and he discovered a secret hidden deep within Liu Sanqing's heart—one that even she herself had never realized.
She was actually... a fragment of Wang Akarin Solina's sealed soul!
When King Jose de Abria sealed Wang Akarin Solina, a portion of his own soul had been sealed as well. That part of his soul came to Earth. Perhaps he had come here in search of Wang Akarin Solina.
Wang Akarin Solina's body and most of her soul had been sealed within the Bottle of Pabulongdao, but a small portion of her soul escaped, crossed the vast universe, and arrived on Earth, becoming the Earth orphan Liu Sanqing.
It was also because of Wang Akarin Solina's soul that Liu Sanqing's body underwent tremendous changes. She had yet to fully recover all of Wang Akarin Solina's abilities, but