Vietnam- Guangzhou - Beijing- Russia

On April 17th, 2024, I will be travelling to China. My arrival destination will be Guangzhou, from Vietnam. I have already made a hotel reservation in Guangzhou, and I plan to stay there for five nights. After my stay in Guangzhou, I will be travelling to Beijing, where I will only be staying in the airport zone. From there, I will be flying to Russia. My total stay in China will be 127 hours. I wanted to know if I am eligible for a 144-hour visa-free stay, and if it is possible to enter China through the port of Guangzhou and exit through Dixin (Beijing). I am holder NZ and Russian passports