Two members had already set out on their journey - one has now turned back and the other is in transit in a third country, the BBC reported on Wednesday.
Those arrested in August range in age from 16 to 33. Their families are now campaigning to use their own lawyers instead of the court-appointed ones from the Chinese side.
"The fostering of numerical skills for sifting through online information could well be vital for curbing the 'infodemic' and promoting good public health behaviour."
