Can Hong Kong apply for a Myanmar visa?

Yes, you have a China passport and a Myanmar visa. You are working in Myanmar now, right? You can buy a plane ticket to fly directly from Myanmar to Hong Kong. Passport holders can stay in Hong Kong for 7 days without a visa. After the concert, you have to take a bus to Shenzhen for several hours. Because you are allowed to enter Hong Kong because you are crossing the border to return to China, you can fly back to Myanmar with your China passport, Myanmar visa and Hong Kong e-ticket, and then you can fly back to Myanmar smoothly.