For Qin Country, this day might be considered a good one. King Qin Ying Duo received the support of the Great Tang Empire and formally declared himself Emperor, proclaiming the establishment of the Great Qin Empire.
The Tri-Emperor Alliance was officially formed, and its new name greatly excited Ying Duo. Of course, this was before he learned of the Tang Army's massive naval victory.
When King Qin Ying Duo heard that the Tang Navy had annihilated the Shen Army's main fleet, sinking 12 battleships in one fell swoop, he felt that his imperial throne didn't seem as appealing anymore.
From his perspective, he had hoped that Tang Country would suffer a defeat during its offensive against the Shen Army. Then, Tang Country wouldn't shift its attention to the Western Continent, giving Qin Country better developmental opportunities.