Details of accused killer Tingjun Cao's police interview are expected to be heard in court today

He's on trial for the murder of Christchurch real estate agent Yanfei Bao last July - her body was missing for more than a year.

The jury was shown data yesterday, where the pair's phones appeared to be travelling around Christchurch together on the day she disappeared.

Bao's phone was also located near her grave site for about half an hour that day.

Cao says he has 21 more statements in his cross examination, before the next witness will be called to speak on his police interview.