Wong reached the last four in 2013 and his achievement this year is only the second time he has reached the last four of a Badminton World Federation (BWF) Super Series event.

Having outplayed number four seed Tian on his way to a 21-18, 21-17 victory, he acknowledged that this has been a lucky event for him.

"I was in the semi-finals in the Korea Open in 2013, it’s quite amazing that I’ve done well in the same tournament," said Wong.

Wong has had a good year, winning his first international title - the Vietnam Open - in July and reaching the semi-finals at the Yonex Open in Chinese Taipei.

"The Vietnam Open was my first international title," added Wong.

"It gave me a lot of confidence. 

"After losing in the Yonex Open Japan to Viktor Axelsen, I got ready for this tournament. 

"I hope I will play with more confidence tomorrow.”

Wong now takes on young Chinese player Qiao Bin in the last four, who powered past local hope Heo Kwang Hee 21-7, 21-14.

The other semi-final features an all South Korean affair between Son Wan Ho and Lee Hyun Il, with both enjoying straight-games wins in their quarter-finals.

Lee defeated India’s Ajay Jayaram 25-23, 21-13 whilst Son eased past Denmark's Hans-Krist Vittinghus, 21-18, 21-13.

Current women’s singles defending champion Sung Ji Hyun of South Korea beat Chinese Taipei’s Tai Tzu Ying, 21-16, 21-18 in a repeat of last year's quarter-final result.

The women’s singles final will definitely be a Japan versus South Korea affair, as Sung’s compatriot Kim Hyo Min eased into the last four to meet her after beating Ga Eun Kim, also of South Korea, 21-19, 21-8.

The bottom half of the draw will see Japanese duo Akane Yamaguchi and Minatsu Mitani square off in the last four.

Yamaguchi had little trouble making her way past young Korean Kim Hyang Im, 21-13, 21-13, but Mitani had to struggle hard to overcome China’s Chen Yufei, 14-21, 21-19, 21-16.

In the men’s doubles, Chinese duo Li Junhui and Liu Yuchen’s recent dominance over Indonesia’s Mohammad Ahsan and Hendra Setiawan continued, as they decimated them in under half-an-hour, 21-11, 21-16, for their fourth straight win against the world champions.

Home favourites Lee Yong Dae and Yoo Yeon Seong survived their own inconsistent play and the combative Japanese duo Takeshi Kamura and Keigo Sonoda to win 21-15, 18-21, 21-18 and go within two wins of defending their title.

Olympic mixed doubles silver medallists Chan Peng Soon and Goh Liu Ying of Malaysia had a close shave against Denmark’s Anders Skaarup Rasmussen and Sara Thygesen.

A short serve by Goh brought the Danes level at 19 in the third, but Goh made amends shortly afterwards by showing great dynamism at the net and winning match point to take the game 21-14, 14-21, 21-19.

The Malaysians will now play familiar foes Ko Sung Hyun and Kim Ha Na of South Korea in the semi-finals, who beat another Danish pair in Kim Astrup and Line Kjaersfeld, 21-14, 14-21, 21-19.

In the women’s doubles, China’s Luo Ying and Luo Yu overcame Bulgaria’s Stefani Stoeva and Gabriela Stoeva 21-19, 15-21, 18-21 in a rare match between siblings on either side.

The Luos will now face Denmark’s Christinna Pedersen and Kamilla Rytter Juhl, who are in sight of their second straight Super Series title after winning in Japan, as they beat Chinese duo Yu Xiaohan and Ou Dongni 21-15, 21-12.

Action continues tomorrow at the Seong-nam Indoor Stadium in Seoul.