Below are the results this year for these two games in South Korea & Taiwan's Top 5,

This data covers the period between the launch of New Horizon Week 12, 2020 and Week 46, 2020:

New Horizon Taiwan:
1st; 1st; 5th; n/a; 2nd; 1st; 1st; 1st; 1st; 1st; 2nd; 1st; 1st; 4th; 3rd; 4th; 3rd; 3rd; 3rd; 2nd; 1st; 1st; 2nd; 4th; 5th; 1st; 2nd; 3rd; 2nd; 2nd; 2nd; 4th; n/a; 5th; n/a;

New Horizon South Korea:
1st; 1st; 1st; 2nd; 1st; 1st; 1st; 1st; 1st; 1st; 1st; 1st; 1st; 2nd; 1st; 2nd; 1st; 3rd; 2nd; 1st; 1st; 2nd; 2nd; 3rd; 3rd; 2nd; 2nd; 3rd; 2nd; 2nd; 2nd; 1st; 1st; 1st; 3rd;

Ring Fit Adventure Taiwan:
5th; 4th; 4th; 3rd; 3rd; n/a; 3rd; 2nd; 2nd; 2nd; 3rd; 3rd; 3rd; 5th; 2nd; 1st; 1st; 4th; 2nd; 3rd; 2nd; 2nd; 1st; 5th; 3rd; 3rd; 3rd; 1st; 1st; 1st; 1st; 1st; 3rd; 1st; n/a;

Ring Fit Adventure South Korea:
4th; 4th; 2nd; 3rd; 2nd; 2nd; 2nd; 2nd; 4th; 2nd; 3rd; 2nd; 2nd; 4th; 2nd; 3rd; 2nd; 4th; 3rd; 2nd; 2nd; 1st; 1st; 2nd; 1st; 1st; 1st; 2nd; 1st; 1st; 1st; 2nd; 2nd; 2nd; 2nd;

Below are last year's Taiwan and South Korea Numbers via Media Create:

Taiwan Console Sales 2019:

Taiwan Software Sales 2019:

South Korea Console Sales 2019:

South Korea Software Sales 2019:

Ring Fit Adventure and New Horizon have driven a huge 152% growth for Nintendo in "Other" region last quarter and with Ring Fit finally resolving it's stock problems by officially launching in China in September, it's looking like this Quarter we will see huge growth for the two franchises and a big part of it will come from Asia. If we are to apply 150% growth in South Korea & Taiwan these are the numbers we would get:

Taiwan Hardware: 491K

Taiwan Software: 2.8M

South Korea Hardware: 965K

South Korea Software: 3.9M

For comparison in France Switch sold 1.250.000 hardware in 2019, so even a 100% growth YOY would be considerable while 150% being really difficult to phantom. Yet with COVID, New Horizon and Ring Fit Adventure - it's actually possible that we are seeing accelerated growth for Nintendo this year compared to 2019. Compare this to the growth in the main markets last financials, 67% in Japan, 61% in the Americas and 72% in Europe. South Korea and Taiwan give us insights on what to expect this holiday season - provided Nintendo is able to supply enough consoles to meet demand in all the countries they've officially launched. 

There is a further point, South Korea and Taiwan give us a hint regarding the potential popularity of the Switch in mainland China. 

New Horizon hasn't even launched officially in China btw, as the strict regulations basically mean that the only games you can buy on the Switch on a Chinese Switch are Ring Fit Adventure(launched in September), Mario Kart 8 Deluxe; NSMBUD & Super Mario Odyssey(launched in March). 

So outside of RFA and New Horizon, you can expect those three games to benefit from being the only Nintendo titles available officially on the Switch in China this quarter. If Nintendo manages to somehow get New Horizon, Breath of the Wild, Splatoon 2, Pokemon Sword / Shield, Smash Ultimate launched in the coming quarters in China - they could very well see huge growth in the coming years. Especially New Horizon could become an unimaginable success, if Switch and it's games start to become readily available on the biggest video game market in the near future.  

Asia is primarily Nintendo now, even without having more games releasing in China. Incredible growth for Nintendo and the Switch.

There's a NintenBOOM in Asia.

(Taiwan)
Media Create Sales Week 47, 2020 (16 Nov - 22 Nov)

01./00. [NSW] Hyrule Warriors: Age of Calamity (Nintendo) {2020.11.20}
02./00. [NSW] Ring Fit Adventure (Nintendo) {2019.10.31}
03./01. [PS4] Assassin's Creed: Valhalla (Ubisoft) {2020.11.10}
04./00. [PS5] Marvel's Spider-Man: Miles Morales (Sony Interactive Entertainment) {2020.11.12}
05./00. [NSW] Super Mario Party (Nintendo) {2018.10.05}

Top 5

NSW - 3
PS4 - 1
PS5 - 1

(South Korea)
Media Create Sales Week 47, 2020 (16 Nov - 22 Nov)

01./00. [NSW] Hyrule Warriors: Age of Calamity (Nintendo) {2020.11.20}
02./02. [NSW] Ring Fit Adventure (Nintendo) {2019.10.18}
03./03. [NSW] Animal Crossing: New Horizons (Nintendo) {2020.03.20}
04./00. [NSW] Mario Kart 8 Deluxe (Nintendo) {2017.12.15}
05./00. [NSW] The Legend of Zelda: Breath of the Wild (Nintendo) {2018.02.01}

Top 5

NSW - 5

Ring Fit gets a restock in Taiwan while maintaining it's 2nd place in South Korea. Interestingly New Horizon is now missing from Taiwan's Top 5 for a second week in a row. Great debut by Age of Calamity as it claims top spot in both markets. 

Media Create Sales: Week 48, 2020 (Nov 23 - Nov 29)

(Taiwan)
01./01. Hyrule Warriors: Age of Calamity (Nintendo)
02./00. Taiko no Tatsujin: Rhythmic AdventurePack (Bandai Namco Entertainment) NEW
03./02. Ring Fit Adventure (Nintendo)
04./00. Just Dance 2021 (Ubisoft) NEW
05./00. Mario Kart 8 Deluxe (Nintendo)

(South Korea)
01./02. Ring Fit Adventure (Nintendo)
02./01. Hyrule Warriors: Age of Calamity (Nintendo)
03./03. Animal Crossing: New Horizons (Nintendo)
04./05. The Legend of Zelda: Breath of the Wild (Nintendo) 
05./04. Mario Kart 8 Deluxe (Nintendo) 

Media Create Sales Week 49, 2020 (30 Nov - 6 Dec)

(Taiwan)
01./00. [NSW] Atelier Ryza 2: Lost Legends & the Secret Fairy (Koei Tecmo) NEW
01./01. Hyrule Warriors: Age of Calamity (Nintendo) 
03./00. [PS4] Atelier Ryza 2: Lost Legends & the Secret Fairy (Koei Tecmo) 
04./03. Ring Fit Adventure (Nintendo) 
05./00. Fitness Boxing 2: Rhythm & Exercise (Justdan) 

(South Korea)
01./01. Ring Fit Adventure (Nintendo) 
02./03. Animal Crossing: New Horizons (Nintendo)
03./00. Fitness Boxing 2: Rhythm & Exercise (Nintendo) NEW
04./02. Hyrule Warriors: Age of Calamity (Nintendo) 
05./04. The Legend of Zelda: Breath of the Wild (Nintendo)

Media Create Sales Week 50, 2020 (7 Dec - 13 Dec)

(Taiwan)
01./00. [PS4] Cyberpunk 2077 (Sega) 
02./04. [NSW] Ring Fit Adventure (Nintendo) 
03./02. [NSW] Hyrule Warriors: Age of Calamity (Nintendo)
04./00. [NSW] Romance of the Three Kingdoms XIV with Power-Up Kit (Koei Tecmo) 
05./00. [NSW] Mario Kart 8 Deluxe (Nintendo) 

(South Korea)
01./00. [PS4] Cyberpunk 2077 (H2 Interactive) 
02./01. [NSW] Ring Fit Adventure (Nintendo) 
03./02. [NSW] Animal Crossing: New Horizons (Nintendo) 
04./00. [NSW] Mario Kart 8 Deluxe (Nintendo) 
05./04. [NSW] Hyrule Warriors: Age of Calamity (Nintendo) 

Age of Calamity continues to do well in South Korea and Taiwan, #2 on the South Korean in Week 50 eShop behind New Horizon in Week 50