For the last few days, international headlines have been dominated by stories about Donald Trump's visit to China, to meet Xi Jinping. The trip featured marching bands, red carpets, photocalls, big smiles and many, many handshakes. Now that President Trump has left the country, we ask what actually happened below the surface level. Was it all just superficial pageantry or did the leaders of the world’s two largest economies make any real agreements or deals?

People expected talks on trade deals, the war in Iran and Taiwan. President Trump didn't travel alone; he was joined by some of the biggest heavyweights in American technology and business. Tesla and Space X boss, Elon Musk, Tim Cook, the head of Apple and David Solomon, from the bank Goldman Sachs to name a few.

So, what, if anything, actually came out of this trip? And what is the US-China relationship really like? We hear from BBC reporters covering the visit and find out how people in China are reacting to President Trump and his visit.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Chelsea Coates and Emma-Louise Amanshia Editor: Verity Wilde

Since the Iran war broke out, the Strait of Hormuz has effectively been blocked. The Strait is one of the world's busiest oil shipping routes - leading to fears about shortages of jet fuel. Prices for aviation fuel more than doubled after the war began, and the cost of some plane tickets has gone up dramatically. In May 13,000 flights were cut from schedules. And European travel operator Tui says its customers are appearing more cautious about booking summer holidays due to the Iran war.

Loads of people have questions about jet fuel shortages, airlines cancelling flights, and if jet fuel could run out. This has also sparked a conversation about sustainability, with people asking if reducing flights could have a positive impact on the climate, as well as whether eco-fuel could replace jet fuel. In this episode we sit down with BBC business reporter Emer Moreau to answer all your burning questions about jet fuel shortages.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison, Baldeep Chahal and Benita Barden Video Producer: Baldeep Chahal Editor: Verity Wilde

Where do you stand on voice notes? In some places, sending a three minute - or even 20 minute(!) voice memo is totally normal and actually seen as much more personal than texting.

It started back in 2013 on WhatsApp but now you can send voice messages on Instagram as well as some dating sites. Lots of people love them as you can send messages on the go and don’t have to worry about typos. BUT is it selfish or indulgent to send them? Some people say they demand more time for the person receiving them and it’s not always practical to listen to them, especially if you’re at work.

In this episode we unpack why voice messages are more popular in some countries and some of the voice message etiquette with BBC reporter Ashitha Nagesh. We also hear from some of our BBC friends around the world - why do you love or hate them?

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Chelsea Coates, Jenna Abaakouk, Emily Horler and Julia Ross-Roy Editor: Verity Wilde