China vowed on Tuesday to help Nigeria end three bottlenecks containing the biggest African economy's industrialization and agricultural modernization.

President Xi Jinping made the remarks when meeting with his Nigerian counterpart Muhammadu Buhari, who is leading a delegation of 12 ministers, six governors, 35 high-ranking officials and 160 entrepreneurs on his first visit to China since taking office last year.

Buhari is trying to diversify his country's economy, which faces new challenges arising from the fall in oil prices. Nigeria is Africa's biggest oil and natural gas producer.