Any chance for it to happen?

Dear Developer I am stuck with this game and need some help. BTW, you can reply in Chinese if you like. I can read Chinese, but cannot type Chinese on my PC. I have been unable to activate the quest to save 劉備. I have already finished the quests to save 曹操 and 孫權. I have also found 關羽・張飛・趙雲・龐統・ 諸葛亮. Now, I am stuck. I have walked everywhere but cannot find anyway to advance the story. My question is : how can I activate the quest to save 劉備? Also, is there...

One more question. I managed to recruit everyone except this 黄忠. I found him, but cannot recruit him. Please let me know and thanks.

I killed the last boss and finished the game. I was teleported back to the present day, and the game asked me to SAVE. After that I talked to the guy again, and the game told me about NewGame+ and then ended. It brings me to the main screen, but there is NO NewGame+. I started NewGame, but it is exactly the same as the NewGame that I played before, with no benefits or difference. So, is NewGame+ broken? Please reply....

What does the a1 b2 d3 supposed to mean?