US Immigration from China

Hello forum experts,

I have a rather technical question and seek for some confirmation for my thoughts below. I've contacted the U.S. consulate in Guangzhou as well as Berlin, but not sure if they really gonna respond to my question.

I am a German citizen living in Guangdong/China based on a family-reunion residence permit. I have 2 children, ages 8 and 10 born in China and holding the Chinese passport, as well as the German passport (due to my German citizenship as their father).

We plan to travel to the US by the end of July for about 4-5 weeks to meet old friends of mine and also to show my children part of the country.

A couple of days ago I submitted for my children (on behalf of their Chinese citizenship and passport) the DS-160 application with the Guangzhou U.S. consulate, received the CEAC confirmation and will pay and book an appointment in the upcoming days. However, I didn't realize the long waiting time for the interview appointment in Guangzhou, which is 113 days - most likely to happen in September. By that time we would have already returned back to China.
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Our travel plan would include Germany as the first stop, from there, we would travel to the US and finally return back to China. Once we returned back to China in late August, I would continue to apply for their B1/B2 visa for their Chinese passports at the given interview appointment as initially intended.

So my actual, rather technical question is, if it is possible for my children for our planned summer trip to the US to use their German passports with a prior clearance using ESTA to apply for a US entry while I've already triggered the process to apply for a B1/B2 visa for their Chinese passports? I do not want to bring up some kind of confusion after all.

So, is the above way working and legit without further issues or a negative impact on their future B1/B2 visa approval?

Any hints and thoughts are greatly appreciated! Thanks for spending your time on my issue

My wife has been here a little more than a year now and her daughter, son-in-law, and granddaughter are getting ready for their interview at the American Consulate in Guangzhou. They are asking me for preparation questions so that they can practice before the interview. I've looked almost everywhere and haven't found any. Anybody have a clue where to look or what they might ask?

My wife's Chinese nephew has a 10 yr visa from 2016 till 2026. He wants to come now to visit. Does he have to update it or do anything before he can book a flight and visit. Thank you.

My wife and I recently moved back to the US from China. I am a USC and she is a Chinese national with a CR1 green card. She has been in the US for 6 months. We would like to have her mother come and visit us. Her mother contacted a local visa agency in China to get help with her B2 application. They told her that since her daughter has a CR1 green card and has not been in the US for very long, her chances are low of obtaining a B2 visa and that if she applies now and is rejected, it might hurt her chances of obtaining a B2 visa in the future..

Is this sound advice? Should we try anyways?

My same-sex partner's (not married) b1/b2 visa got denied . She planed to travel with me to LA, I am a permanent resident of Canada and have a valid USA visa on my passport.

She is preparing her second visa interview. I wonder if it would be better without mentioning me? The officer asked if she traveled with your lover in the first interview, she was nervous because it's her first time went to interview. I am not sure if the denial is related to her interview performance or due to my USA visa. I wonder if the officer will think she has chance to travel with me to Canada instead of returning to China? However, in any cases, there is no intention to overstay in the USA.

Any advices will be highly appreciated!