Others also accused the panel of hiding information and called for raw data to be released.
The news conference started more than two hours late. In a bizarre scene that seemed to sum up Chinese frustrations at pace of Malaysian reaction to the disappearance, the Chinese Ambassador to KL — in the absence of any Malaysian officials — began giving an interview at the front of the assembled journalists, until an official pointed out the conference was for interviewing Malaysian leaders.
Earlier, families and friends looking for a breakthrough in the missing Malaysia Airlines jetliner inquiry said the wait had been "frustrating" and "infuriating". The family of New Zealander Ximin Wang were among those who had taken up the airline's offer to wait in Kuala Lumpur for updates on the search for loved ones.
Most were getting restless, angry and frustrated.
A relative of one of the passengers, who declined to be named, said she had decided to travel to KL because she was "going crazy" about the lack of updates from the airline in Beijing.
Six Chinese nationals who arrived from Beijing on Tuesday began screaming at the media as they were escorted from their rooms to lunch.
Some, who have turned up at the Kuala Lumpur International Airport daily, are calling for officials to "come clean and be upfront".
"How can they take (five) days to find out that the plane had turned around when the information came from our own Malaysian military?" said Mohammed Johari, who lost an uncle on the flight.
"What else are they not saying? It is frustrating and infuriating."
Flight 370 disappeared from radar on Saturday with 239 people on board while flying from Kuala Lumpur to Beijing.
Updates were two hourly when the flight first went missing, but it was down to just the single press conference yesterday.
Hunt for Flight 370
• Search teams shift focus to the Andaman Sea West of Malaysia.
• Authorities appear confused over whether plane veered massively off-course.
• US transport officials warned of Boeing 777 "weak spot"
Airline shocked by pilot's party pics
A woman photographed in a Malaysia Airlines cockpit with one of the pilots from the company's missing aircraft says she and a friend were picked out of the boarding queue.
The airline said it was "shocked" by pictures of First Officer Fariq Abdul Hamid posing with two South Africans who said he smoked on the flight deck and allowed them to stay during take-off and landing, against airline rules.
Malaysia Airlines said it was "taking very seriously" an account from Jonti Roos, a former passenger who said Mr Hamid invited her and a friend on to the flight deck of another Malaysia Airlines aircraft, flying from Phuket, Thailand to Kuala Lumpur in 2011.
She said he had spent much of the journey smoking and chatting to his guests.
Miss Roos said that she and Jaan Maree were picked out of the boarding queue to join the pilots for the one-hour flight, and sat in jump seats in the cockpit during take-off and landing, against airline regulations.
She told Channel 9 television in Australia: "Throughout the whole flight they were talking to us, they were actually smoking throughout the flight, which I don't think they're allowed to be doing and they were taking photos with us in the cockpit while they were flying the plane."
She claimed that for much of the trip the pilots were not even facing the front of the plane.
Miss Roos said while the pilots were "possibly a little bit sleazy" and invited the women to stay with them in Kuala Lumpur, she felt they were in control of the aircraft.
