On Thursday, India's biggest budget airline IndiGo said that it would restart direct flights between the cities of Kolkata and Guangzhou from 26 October.

In a statement released on Thursday, India's foreign ministry said that the resumption of flights would "further facilitate people-to-people contact" between the two countries and contribute towards "gradual normalisation of bilateral exchanges".

India and China share an ill-defined border that is more than 3,440km (2,100 miles) long and have overlapping territorial claims.

In 2020, troops of the two countries clashed at the Galwan river valley, leaving at least 20 Indian soldiers and four Chinese soldiers dead.

It was the first fatal confrontation between the two sides since 1975 and led to a freezing of ties.

But over the past year or so, Beijing and Delhi have been taking steps to gradually re-rebuild the frayed relationship.

High-ranking officials from the two sides have held several rounds of talks and meetings.

In October last year, India and China agreed on patrolling arrangements to de-escalate tensions along the disputed Himalayan border.

This year, China began allowing Indian pilgrims to visit some places of religious importance in what it calls the Tibet Autonomous Region while India restarted visa services to Chinese tourists and agreed to resume talks to open border trade through designated passes.

India's souring relationship with the US over President Donald Trump's punishing tariffs has also provided an impetus to Delhi-Beijing ties.

In August, Chinese Foreign Minister Wang Yi visited Delhi, where he said that India and China should see each other as "partners" rather than "adversaries".

Later the same month, Chinese ambassador to India Xu Feihong called the US a "bully" for imposing steep tariffs on India and other countries.

In August, Prime Minister Narendra Modi visited China for the first time in seven years for the Shanghai Co-operation Organisation (SCO), a defence summit. He also met Chinese President Xi Jinping at the sidelines of the summit, and the two re-iterated their commitment towards normalising India-China ties.

India and China to resume direct flights in October after five-year ban