Contact your employer's overseas headquarters  Request a sabbatical to be spent NOT IN THE PRC BUT OUTSIDE, in a foreign country closer to said company HQ

Anyone not already in your position will need sheepskin from a  C9 or 985-/211-caliber university just to be you  Why take a step backward to be with them
when seniority will easily qualify you for some well-earned vacation time with native English-speakers abroad?

"读万卷书不如行万里路"，

不建议辞职读非全

不要脱产读

还是朝着南开再次努力吧！专职读非全，不合适。